obtuseadj.

Brit.

/əbˈtjuːs/,

/ɒbˈtjuːs/,

/əbˈtʃuːs/,

/ɒbˈtʃuːs/, U.S.

/əbˈt(j)us/,

/ɑbˈt(j)us/

Origin: A borrowing from Latin. Etymon: Latin obtūsus.

Etymology: < classical Latin obtūsus blunt, dull, stupid, (of an angle) greater than 90 degrees and less than 180 degrees, use as adjective of past participle of obtundere obtund v. Compare Middle French, French obtus , obtuse blunt (c1370 in Chauliac; compare quot. ?a1425 at sense 1a), dull, stupid (1532), (of an angle) greater than 90 degrees and less than 180 degrees (1542), indistinctly perceived (c1550 in Paré).With obtuse-lobate (see Compounds 2) compare earlier obtusilobous adj. at obtusi- comb. form .

a. Chiefly Botany and Zoology. Not sharp or pointed, blunt.

ΘΚΠ

the world > space > shape > bluntness > [adjective]

dulta1225

blunt1398

obtuse?a1425

dullc1440

slow1440

obtusedc1487

retuse1654

dubbed1747

the world > animals > animal body > general parts > [adjective] > slender or pointed > not sharp or pointed

obtuse1657

the world > plants > part of plant > part defined by form or function > [adjective] > having a rounded end

truncated1752

obtuse1753

premorse1753

retuse1753

spatulate1760

spatulated1777

lopped1787

succise1880

?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 78^v Þo [instruments]..he calleþ ciryngathoma, bycopez, curue, suple, & obtuse, i. blont [?c1425 Paris dulle; L. obtusos], byhynde & at þe ende & not sharp.

1589 G. Puttenham Arte Eng. Poesie ii. xi. 84 Such shape as might not be sharpe..to passe as an angle, nor so large or obtuse as might not essay some issue out with one part moe then other as the rounde.

1657 S. Purchas Theatre Flying-insects 6 Their tails are somewhat sharp (the Drones more obtuse).

1660 R. Boyle New Exper. Physico-mechanicall xxxix. 322 An Oval (1858) Glass..with a short Neck at the obtuser end.

1753 Chambers's Cycl. Suppl. at Leaf Obtuse Leaf, one terminated by the segment of a circle.

1767 B. Gooch Pract. Treat. Wounds I. 237 A blow with an obtuse weapon.

1806 Philos. Trans. (Royal Soc.) 96 427 This socket..supports the whole weight of the moveable part of the instrument, which revolves on an obtuse point at the bottom.

?1877 F. E. Hulme Familiar Wild Flowers I. Summary p. viii Spur stout, obtuse.

1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) v. 130 The marginal border of the cephalon is drawn out into an obtuse point in front.

1997 Jrnl. Ecol. 85 531/1 Leaves..oblong-ovate to lanceolate, cordate at base, crenate-serrate, apex acute or obtuse.

b. Geometry. Of a plane angle: greater than 90 degrees and less than 180 degrees. Frequently in obtuse angle.

ΘΚΠ

the world > space > shape > angularity > [noun] > angle or corner > obtuse angle

obtuse angle1570

bull's-nose1842

the world > space > shape > angularity > [adjective] > constituting an angle > obtuse

obtuse1570

the world > relative properties > number > geometry > angle > [adjective] > obtuse angled

blunt-angled1551

obtusiangle?a1560

obtuse1570

obtuse-angled1570

amblygon1605

amblygonal1618

obtusangulous1680

amblygonial1704

obtusangular1706

amblygonous1728

obtuse angular1782

1570 H. Billingsley tr. Euclid Elements Geom. i. f. 2^v An obtuse angle is that which is greater then a right angle.

1633 P. Fletcher Purple Island iii. xxi. 34 Into two obtuser angles bended.

1701 N. Grew Cosmol. Sacra ii. v. §18 All Salts are Angular; with Obtuse, Right, or Acute Angles.

1790 Nat. Hist. in J. White Jrnl. Voy. New S. Wales App. 283 Their base is a triangle of the scalenus kind, or having one angle obtuse and two acute.

1879 E. P. Wright Animal Life 6 This bone forms an obtuse angle with the pelvis.

1972 M. Kline Math. Thought xii. 239 The negative values of the cosine and tangent functions for obtuse angles.

1991 Choice Mar. 77/3 Most restaurants now have low chairs..with the backs at an acute angle, compressing the stomach, whereas they should be at right angles and preferably an obtuse angle.

2. figurative.

a. Annoyingly unperceptive or slow to understand; stupid; insensitive. Also, of a remark, action, etc.: exhibiting dullness, stupidity or insensitivity; clumsy, unsubtle. Formerly also: †rough, unpolished; = blunt adj. 4 (obsolete rare).

ΘΚΠ

the mind > mental capacity > lack of understanding > stupidity, dullness of intellect > [adjective]

sloweOE

stuntc960

dullOE

hardOE

stuntlyc1000

sotc1050

dillc1175

dulta1225

simplea1325

heavy1340

astonedc1374

sheepishc1380

dull-witteda1387

lourd1390

steerishc1411

ass-likea1425

brainless?a1439

deafc1440

sluggishc1450

short-witted1477

obtuse1509

peakish1519

wearish1519

deaf, or dumb as a beetle1520

doileda1522

gross1526

headlessa1530

stulty1532

ass-headed1533

pot-headed1533

stupid?1541

sheep's head1542

doltish1543

dumpish1545

assish1548

blockish1548

slow-witted1548

blockheaded1549

surd1551

dull-headed1552

hammer-headed1552

skit-brained?1553

buzzardly1561

witless1562

log-headeda1566

assy1566

sottish1566

dastardly1567

stupidious1567

beetle-headed1570

calvish1570

bluntish1578

cod's-headed1578

grout-headed1578

bedaft1579

dull-pated1580

blate1581

buzzard-like1581

long-eared1582

dullard1583

woodena1586

duncical1588

leaden-headed1589

buzzard1592

dorbellical1592

dunstical1592

heavy-headeda1593

shallow-brained1592

blunt-witted1594

mossy1597

Bœotian1598

clay-brained1598

fat1598

fat-witted1598

knotty-pated1598

stupidous1598

wit-lost1599

barren1600

duncifiedc1600

lourdish1600

stockish1600

thick1600

booby1603

leaden-pated1603

partless1603

thin-headed1603

leaden-skulledc1604

blockhead1606

frost-brained1606

ram-headed1608

beef-witted1609

insulse1609

leaden-spirited1609

asininec1610

clumse1611

blockheadly1612

wattle-headed1613

flata1616

logger-headeda1616

puppy-headeda1616

shallow-patedc1616

thick-brained1619

half-headed1621

buzzard-blinda1625

beef-brained1628

toom-headed1629

thick-witted1634

woollen-witted1635

squirrel-headed1637

clod-pated1639

lean-souled1639

muddy-headed1642

leaden-witteda1645

as sad as any mallet1645

under-headed1646

fat-headed1647

half-witted1647

insipid1651

insulsate1652

soft-headed1653

thick-skulleda1657

muddish1658

non-intelligent1659

whey-brained1660

sap-headed1665

timber-headed1666

leather-headeda1668

out of (one's) tree1669

boobily1673

thoughtless1673

lourdly1674

logger1675

unintelligenta1676

Bœotic1678

chicken-brained1678

under-witted1683

loggerhead1684

dunderheaded1692

unintelligible1694

buffle-headed1697

crassicc1700

numbskulled1707

crassous1708

doddy-polled1708

haggis-headed1715

niddy-noddy1722

muzzy1723

pudding-headed1726

sumphish1728

pitcher-souleda1739

duncey1743

hebete1743

chuckheaded1756

dumb1756

duncely1757

imbecile1766

mutton-headed1768

chuckle-headed1770

jobbernowl1770

dowfarta1774

boobyish1778

wittol1780

staumrel1787

opaquec1789

stoopid1791

mud-headed1793

borné1795

muzzy-headed1798

nog-headed1800

thick-headed1801

gypit1804

duncish1805

lightweight1809

numbskull1814

tup-headed1816

chuckle-pate1820

unintellectuala1821

dense1822

ninnyish1822

dunch1825

fozy1825

potato-headed1826

beef-headed1828

donkeyish1831

blockheadish1833

pinheaded1837

squirrel-minded1837

pumpkin-headed1838

tomfoolish1838

dundering1840

chicken-headed1842

like a bump on a log1842

ninny-minded1849

numbheadeda1852

nincompoopish1852

suet-brained1852

dolly1853

mullet-headed1853

sodden1853

fiddle-headed1854

numb1854

bovine1855

logy1859

crass1861

unsmart1861

off his chump1864

wooden-headed1865

stupe1866

lean-minded1867

duffing1869

cretinous1871

doddering1871

thick-head1873

doddling1874

stupido1879

boneheaded1883

woolly-headed1883

leaden-natured1889

suet-headed1890

sam-sodden1891

dopey1896

turnip-headed1898

bonehead1903

wool-witted1905

peanut-headed1906

peanut-brained1907

dilly1909

torpid-minded1909

retardate1912

nitwitted1917

meat-headed1918

mug1922

cloth-headed1925

loopy1925

nitwit1928

lame-brained1929

dead from the neck up1930

simpy1932

nail-headed1936

square-headed1936

dingbats1937

pinhead1939

dim-witted1940

pea-brained1942

clueless1943

lobotomized1943

retarded1949

pointy-headed1950

clottish1952

like a stunned mullet1953

silly (or crazy) as a two-bob watch1954

out to lunch1955

pin-brained1958

dozy1959

eejity1964

out of one's tiny mind1965

doofus1967

twitty1967

twittish1969

twatty1975

twattish1976

blur1977

dof1979

goofus1981

dickheaded1991

dickish1991

numpty1992

cockish1996

the mind > emotion > absence of emotion > [adjective] > lacking emotional sensibility

unfeelingc1000

mis-feelinga1382

stonishc1450

unpainfulc1450

obtuse1509

sprightlessa1522

insensate1553

senseless1560

soulless1568

dull-esprited1591

impassible1592

bluntie1598

impenetrable1600

stockish1600

stolidc1600

incapable1601

stupid1605

tasteless1605

unsensitive1610

unexalted1611

insensible1617

unsensible1619

languid1622

immovable1639

dead-hearted1642

sterile1642

resupine1643

unaffectionate1645

iron-bound1648

resentlessa1649

torpid1656

torpulent1657

impassive1699

unreceptive1722

hebete1743

apathetic1744

stubbed1744

gustless1766

unresponsive1768

unsusceptible1779

tideless-blooded1786

unaffectioned1788

inaccessible1796

hebetudinous1820

unimpressible1828

insensitive1834

apathetical1835

non-sensitive1836

blunt-hearted1845

irreceptive1846

unreceptant1846

unimpressionable1847

anaesthetic1860

insentient1860

hard (also tough, sharp) as nails1862

unsqueamish1893

tone-deaf1894

unget-at-able1897

facty1901

zombie1937

pegamoid1957

1509 S. Hawes Pastime of Pleasure (1845) xiii. 113 I am but yonge, it is to me obtuse Of these maters to presume to endyte.

a1586 Sir P. Sidney Lady of May in Arcadia (1598) sig. Bbb5^v Thus must I vniforme my speech to your obtuse conceptions.

1602 J. Marston Antonios Reuenge i. iii. sig. B2 I scorne to retort the obtuse ieast of a foole.

1606 W. Warner Continuance Albions Eng. xvi. civ. 408 Obtuse in phrase.

1667 J. Milton Paradise Lost xi. 541 Thy Senses then Obtuse, all taste of pleasure must forgoe.

1792 M. Wollstonecraft Vindic. Rights Woman iii. 107 If the faculties are not sharpened by necessity, they must remain obtuse.

1829 W. Scott Anne of Geierstein I. ii. 41 Obtuse in his understanding, but kind and faithful in his disposition.

1885 M. Blind Tarantella I. xi. 121 We were too obtuse to understand their peculiar way of manifesting it.

1915 W. S. Maugham Of Human Bondage cxi. 589 He remembered with what a callous selfishness his uncle had treated her, how obtuse he had been to her humble, devoted love.

1952 H. E. Bates Love for Lydia ii. iii. 121 Perhaps the sisters were not, after all, as obtuse as they sometimes seemed.

1992 Daily Tel. (BNC) 5 Apr. 13 Kohl..will have to live with a politically obtuse gesture that is being compared to his appearance with American President Ronald Reagan [etc.].

1999 SL (Cape Town) June 144 (advt.) I love being obtuse. Obtuse is my middle name.

†b. Not acutely affecting the senses; indistinctly felt or perceived; dull. Obsolete.

ΚΠ

1620 T. Venner Via Recta ii. 31 The wine..carrieth the same, which otherwise is of an obtuse operation, vnto all the parts [of the body].

1733 J. Swift Epist. to Lady 12 Bastings heavy, dry, obtuse.

1782 W. Cowper Hope in Poems 142 Pleasure is labour too, and tires as much,..By repetition pall'd, by age obtuse.

1791 Philos. Trans. 1790 (Royal Soc.) 80 426 I..felt an obtuse pain..in my stomach.

1897 T. C. Allbutt et al. Syst. Med. IV. 126 Pain, sharp or obtuse.

Compounds

C1.

obtuse bisectrix n. the line bisecting an obtuse angle, esp. between the optic axes of a crystal.

ΚΠ

1883 Science 23 Nov. 690/2 The obtuse bisectrix is always negative.

1929 Proc. Royal Soc. A. 124 550 The obtuse bisectrix appears to emerge just beyond the field of vision on the other side of the normal.

1965 Proc. National Acad. Sci. U.S.A. 54 518 The b-axis lies along the acute bisectrix, and the c-axis along the obtuse bisectrix of the rhombic face of a crystal.

obtuse cone n. Geometry a cone whose section by a plane through the axis has an obtuse angle at the vertex.

ΚΠ

1681 N. Grew Musæum Regalis Societatis (1694) i. i. 9 A stone voided from the Penis or Urethra of a Man who lived at Exeter... Of a Pyramidal figure; with an obtuse Cone.

1858 Philos. Trans. 1857 (Royal Soc.) 147 351 In the Bat (Vespertilio noctula), the placenta has the form of an obtuse cone.

1995 Ann. Statistics 23 58 In this section we will describe a new test that is uniformly more powerful than the LRT [= likelihood ratio test] when the alternative hypothesis is an obtuse cone.

obtuse hyperbola n. Mathematics rare an oblique hyperbola lying within the obtuse angles between its asymptotes.

ΚΠ

1890 Cent. Dict. s.v Hyperbola Obtuse hyperbola, a hyperbola which lies in the obtuse angle between its asymptotes.

C2. Chiefly Botany and Zoology. Forming adjectives with the sense ‘obtuse and ——’ (in sense 1a).

obtuse-lobate adj.

ΚΠ

1878 A. H. Green et al. Coal: Hist. & Uses iv. 146 The two types of fin-structure are sometimes distinguished as obtuse-lobate and acute-lobate.

1942 Ann. Missouri Bot. Garden 29 205 Leaves uniformly and symmetrically obtuse-lobate.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	obtuse
释义	obtuseadj. Brit. /əbˈtjuːs/, /ɒbˈtjuːs/, /əbˈtʃuːs/, /ɒbˈtʃuːs/, U.S. /əbˈt(j)us/, /ɑbˈt(j)us/ Origin: A borrowing from Latin. Etymon: Latin obtūsus. Etymology: < classical Latin obtūsus blunt, dull, stupid, (of an angle) greater than 90 degrees and less than 180 degrees, use as adjective of past participle of obtundere obtund v. Compare Middle French, French obtus , obtuse blunt (c1370 in Chauliac; compare quot. ?a1425 at sense 1a), dull, stupid (1532), (of an angle) greater than 90 degrees and less than 180 degrees (1542), indistinctly perceived (c1550 in Paré).With obtuse-lobate (see Compounds 2) compare earlier obtusilobous adj. at obtusi- comb. form . 1. a. Chiefly Botany and Zoology. Not sharp or pointed, blunt. ΘΚΠ the world > space > shape > bluntness > [adjective] dulta1225 blunt1398 obtuse?a1425 dullc1440 slow1440 obtusedc1487 retuse1654 dubbed1747 the world > animals > animal body > general parts > [adjective] > slender or pointed > not sharp or pointed obtuse1657 the world > plants > part of plant > part defined by form or function > [adjective] > having a rounded end truncated1752 obtuse1753 premorse1753 retuse1753 spatulate1760 spatulated1777 lopped1787 succise1880 ?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 78^v Þo [instruments]..he calleþ ciryngathoma, bycopez, curue, suple, & obtuse, i. blont [?c1425 Paris dulle; L. obtusos], byhynde & at þe ende & not sharp. 1589 G. Puttenham Arte Eng. Poesie ii. xi. 84 Such shape as might not be sharpe..to passe as an angle, nor so large or obtuse as might not essay some issue out with one part moe then other as the rounde. 1657 S. Purchas Theatre Flying-insects 6 Their tails are somewhat sharp (the Drones more obtuse). 1660 R. Boyle New Exper. Physico-mechanicall xxxix. 322 An Oval (1858) Glass..with a short Neck at the obtuser end. 1753 Chambers's Cycl. Suppl. at Leaf Obtuse Leaf, one terminated by the segment of a circle. 1767 B. Gooch Pract. Treat. Wounds I. 237 A blow with an obtuse weapon. 1806 Philos. Trans. (Royal Soc.) 96 427 This socket..supports the whole weight of the moveable part of the instrument, which revolves on an obtuse point at the bottom. ?1877 F. E. Hulme Familiar Wild Flowers I. Summary p. viii Spur stout, obtuse. 1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) v. 130 The marginal border of the cephalon is drawn out into an obtuse point in front. 1997 Jrnl. Ecol. 85 531/1 Leaves..oblong-ovate to lanceolate, cordate at base, crenate-serrate, apex acute or obtuse. b. Geometry. Of a plane angle: greater than 90 degrees and less than 180 degrees. Frequently in obtuse angle. ΘΚΠ the world > space > shape > angularity > [noun] > angle or corner > obtuse angle obtuse angle1570 bull's-nose1842 the world > space > shape > angularity > [adjective] > constituting an angle > obtuse obtuse1570 the world > relative properties > number > geometry > angle > [adjective] > obtuse angled blunt-angled1551 obtusiangle?a1560 obtuse1570 obtuse-angled1570 amblygon1605 amblygonal1618 obtusangulous1680 amblygonial1704 obtusangular1706 amblygonous1728 obtuse angular1782 1570 H. Billingsley tr. Euclid Elements Geom. i. f. 2^v An obtuse angle is that which is greater then a right angle. 1633 P. Fletcher Purple Island iii. xxi. 34 Into two obtuser angles bended. 1701 N. Grew Cosmol. Sacra ii. v. §18 All Salts are Angular; with Obtuse, Right, or Acute Angles. 1790 Nat. Hist. in J. White Jrnl. Voy. New S. Wales App. 283 Their base is a triangle of the scalenus kind, or having one angle obtuse and two acute. 1879 E. P. Wright Animal Life 6 This bone forms an obtuse angle with the pelvis. 1972 M. Kline Math. Thought xii. 239 The negative values of the cosine and tangent functions for obtuse angles. 1991 Choice Mar. 77/3 Most restaurants now have low chairs..with the backs at an acute angle, compressing the stomach, whereas they should be at right angles and preferably an obtuse angle. 2. figurative. a. Annoyingly unperceptive or slow to understand; stupid; insensitive. Also, of a remark, action, etc.: exhibiting dullness, stupidity or insensitivity; clumsy, unsubtle. Formerly also: †rough, unpolished; = blunt adj. 4 (obsolete rare). ΘΚΠ the mind > mental capacity > lack of understanding > stupidity, dullness of intellect > [adjective] sloweOE stuntc960 dullOE hardOE stuntlyc1000 sotc1050 dillc1175 dulta1225 simplea1325 heavy1340 astonedc1374 sheepishc1380 dull-witteda1387 lourd1390 steerishc1411 ass-likea1425 brainless?a1439 deafc1440 sluggishc1450 short-witted1477 obtuse1509 peakish1519 wearish1519 deaf, or dumb as a beetle1520 doileda1522 gross1526 headlessa1530 stulty1532 ass-headed1533 pot-headed1533 stupid?1541 sheep's head1542 doltish1543 dumpish1545 assish1548 blockish1548 slow-witted1548 blockheaded1549 surd1551 dull-headed1552 hammer-headed1552 skit-brained?1553 buzzardly1561 witless1562 log-headeda1566 assy1566 sottish1566 dastardly1567 stupidious1567 beetle-headed1570 calvish1570 bluntish1578 cod's-headed1578 grout-headed1578 bedaft1579 dull-pated1580 blate1581 buzzard-like1581 long-eared1582 dullard1583 woodena1586 duncical1588 leaden-headed1589 buzzard1592 dorbellical1592 dunstical1592 heavy-headeda1593 shallow-brained1592 blunt-witted1594 mossy1597 Bœotian1598 clay-brained1598 fat1598 fat-witted1598 knotty-pated1598 stupidous1598 wit-lost1599 barren1600 duncifiedc1600 lourdish1600 stockish1600 thick1600 booby1603 leaden-pated1603 partless1603 thin-headed1603 leaden-skulledc1604 blockhead1606 frost-brained1606 ram-headed1608 beef-witted1609 insulse1609 leaden-spirited1609 asininec1610 clumse1611 blockheadly1612 wattle-headed1613 flata1616 logger-headeda1616 puppy-headeda1616 shallow-patedc1616 thick-brained1619 half-headed1621 buzzard-blinda1625 beef-brained1628 toom-headed1629 thick-witted1634 woollen-witted1635 squirrel-headed1637 clod-pated1639 lean-souled1639 muddy-headed1642 leaden-witteda1645 as sad as any mallet1645 under-headed1646 fat-headed1647 half-witted1647 insipid1651 insulsate1652 soft-headed1653 thick-skulleda1657 muddish1658 non-intelligent1659 whey-brained1660 sap-headed1665 timber-headed1666 leather-headeda1668 out of (one's) tree1669 boobily1673 thoughtless1673 lourdly1674 logger1675 unintelligenta1676 Bœotic1678 chicken-brained1678 under-witted1683 loggerhead1684 dunderheaded1692 unintelligible1694 buffle-headed1697 crassicc1700 numbskulled1707 crassous1708 doddy-polled1708 haggis-headed1715 niddy-noddy1722 muzzy1723 pudding-headed1726 sumphish1728 pitcher-souleda1739 duncey1743 hebete1743 chuckheaded1756 dumb1756 duncely1757 imbecile1766 mutton-headed1768 chuckle-headed1770 jobbernowl1770 dowfarta1774 boobyish1778 wittol1780 staumrel1787 opaquec1789 stoopid1791 mud-headed1793 borné1795 muzzy-headed1798 nog-headed1800 thick-headed1801 gypit1804 duncish1805 lightweight1809 numbskull1814 tup-headed1816 chuckle-pate1820 unintellectuala1821 dense1822 ninnyish1822 dunch1825 fozy1825 potato-headed1826 beef-headed1828 donkeyish1831 blockheadish1833 pinheaded1837 squirrel-minded1837 pumpkin-headed1838 tomfoolish1838 dundering1840 chicken-headed1842 like a bump on a log1842 ninny-minded1849 numbheadeda1852 nincompoopish1852 suet-brained1852 dolly1853 mullet-headed1853 sodden1853 fiddle-headed1854 numb1854 bovine1855 logy1859 crass1861 unsmart1861 off his chump1864 wooden-headed1865 stupe1866 lean-minded1867 duffing1869 cretinous1871 doddering1871 thick-head1873 doddling1874 stupido1879 boneheaded1883 woolly-headed1883 leaden-natured1889 suet-headed1890 sam-sodden1891 dopey1896 turnip-headed1898 bonehead1903 wool-witted1905 peanut-headed1906 peanut-brained1907 dilly1909 torpid-minded1909 retardate1912 nitwitted1917 meat-headed1918 mug1922 cloth-headed1925 loopy1925 nitwit1928 lame-brained1929 dead from the neck up1930 simpy1932 nail-headed1936 square-headed1936 dingbats1937 pinhead1939 dim-witted1940 pea-brained1942 clueless1943 lobotomized1943 retarded1949 pointy-headed1950 clottish1952 like a stunned mullet1953 silly (or crazy) as a two-bob watch1954 out to lunch1955 pin-brained1958 dozy1959 eejity1964 out of one's tiny mind1965 doofus1967 twitty1967 twittish1969 twatty1975 twattish1976 blur1977 dof1979 goofus1981 dickheaded1991 dickish1991 numpty1992 cockish1996 the mind > emotion > absence of emotion > [adjective] > lacking emotional sensibility unfeelingc1000 mis-feelinga1382 stonishc1450 unpainfulc1450 obtuse1509 sprightlessa1522 insensate1553 senseless1560 soulless1568 dull-esprited1591 impassible1592 bluntie1598 impenetrable1600 stockish1600 stolidc1600 incapable1601 stupid1605 tasteless1605 unsensitive1610 unexalted1611 insensible1617 unsensible1619 languid1622 immovable1639 dead-hearted1642 sterile1642 resupine1643 unaffectionate1645 iron-bound1648 resentlessa1649 torpid1656 torpulent1657 impassive1699 unreceptive1722 hebete1743 apathetic1744 stubbed1744 gustless1766 unresponsive1768 unsusceptible1779 tideless-blooded1786 unaffectioned1788 inaccessible1796 hebetudinous1820 unimpressible1828 insensitive1834 apathetical1835 non-sensitive1836 blunt-hearted1845 irreceptive1846 unreceptant1846 unimpressionable1847 anaesthetic1860 insentient1860 hard (also tough, sharp) as nails1862 unsqueamish1893 tone-deaf1894 unget-at-able1897 facty1901 zombie1937 pegamoid1957 1509 S. Hawes Pastime of Pleasure (1845) xiii. 113 I am but yonge, it is to me obtuse Of these maters to presume to endyte. a1586 Sir P. Sidney Lady of May in Arcadia (1598) sig. Bbb5^v Thus must I vniforme my speech to your obtuse conceptions. 1602 J. Marston Antonios Reuenge i. iii. sig. B2 I scorne to retort the obtuse ieast of a foole. 1606 W. Warner Continuance Albions Eng. xvi. civ. 408 Obtuse in phrase. 1667 J. Milton Paradise Lost xi. 541 Thy Senses then Obtuse, all taste of pleasure must forgoe. View more context for this quotation 1792 M. Wollstonecraft Vindic. Rights Woman iii. 107 If the faculties are not sharpened by necessity, they must remain obtuse. 1829 W. Scott Anne of Geierstein I. ii. 41 Obtuse in his understanding, but kind and faithful in his disposition. 1885 M. Blind Tarantella I. xi. 121 We were too obtuse to understand their peculiar way of manifesting it. 1915 W. S. Maugham Of Human Bondage cxi. 589 He remembered with what a callous selfishness his uncle had treated her, how obtuse he had been to her humble, devoted love. 1952 H. E. Bates Love for Lydia ii. iii. 121 Perhaps the sisters were not, after all, as obtuse as they sometimes seemed. 1992 Daily Tel. (BNC) 5 Apr. 13 Kohl..will have to live with a politically obtuse gesture that is being compared to his appearance with American President Ronald Reagan [etc.]. 1999 SL (Cape Town) June 144 (advt.) I love being obtuse. Obtuse is my middle name. †b. Not acutely affecting the senses; indistinctly felt or perceived; dull. Obsolete. ΚΠ 1620 T. Venner Via Recta ii. 31 The wine..carrieth the same, which otherwise is of an obtuse operation, vnto all the parts [of the body]. 1733 J. Swift Epist. to Lady 12 Bastings heavy, dry, obtuse. 1782 W. Cowper Hope in Poems 142 Pleasure is labour too, and tires as much,..By repetition pall'd, by age obtuse. 1791 Philos. Trans. 1790 (Royal Soc.) 80 426 I..felt an obtuse pain..in my stomach. 1897 T. C. Allbutt et al. Syst. Med. IV. 126 Pain, sharp or obtuse. Compounds C1. obtuse bisectrix n. the line bisecting an obtuse angle, esp. between the optic axes of a crystal. ΚΠ 1883 Science 23 Nov. 690/2 The obtuse bisectrix is always negative. 1929 Proc. Royal Soc. A. 124 550 The obtuse bisectrix appears to emerge just beyond the field of vision on the other side of the normal. 1965 Proc. National Acad. Sci. U.S.A. 54 518 The b-axis lies along the acute bisectrix, and the c-axis along the obtuse bisectrix of the rhombic face of a crystal. obtuse cone n. Geometry a cone whose section by a plane through the axis has an obtuse angle at the vertex. ΚΠ 1681 N. Grew Musæum Regalis Societatis (1694) i. i. 9 A stone voided from the Penis or Urethra of a Man who lived at Exeter... Of a Pyramidal figure; with an obtuse Cone. 1858 Philos. Trans. 1857 (Royal Soc.) 147 351 In the Bat (Vespertilio noctula), the placenta has the form of an obtuse cone. 1995 Ann. Statistics 23 58 In this section we will describe a new test that is uniformly more powerful than the LRT [= likelihood ratio test] when the alternative hypothesis is an obtuse cone. obtuse hyperbola n. Mathematics rare an oblique hyperbola lying within the obtuse angles between its asymptotes. ΚΠ 1890 Cent. Dict. s.v Hyperbola Obtuse hyperbola, a hyperbola which lies in the obtuse angle between its asymptotes. C2. Chiefly Botany and Zoology. Forming adjectives with the sense ‘obtuse and ——’ (in sense 1a). obtuse-lobate adj. ΚΠ 1878 A. H. Green et al. Coal: Hist. & Uses iv. 146 The two types of fin-structure are sometimes distinguished as obtuse-lobate and acute-lobate. 1942 Ann. Missouri Bot. Garden 29 205 Leaves uniformly and symmetrically obtuse-lobate. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). † obtusev. Forms: 1500s–1600s 1800s obtuse, 1600s obtuce (transmission error). Origin: Formed within English, by conversion. Etymon: obtuse adj. Etymology: < obtuse adj. Compare obtused adj. Obsolete (rare after 17th cent.). transitive. To blunt, dull; to render obtuse. ΘΚΠ the world > space > shape > bluntness > make blunt [verb (transitive)] blunta1398 dullc1440 rebate1468 obtusec1487 bate1535 abate1548 turn1560 unedgea1625 retund1691 dead1719 c1487 J. Skelton tr. Diodorus Siculus Bibliotheca Historica iv. 328 Her eres obtused were with the firy glowyng of femynyne malice. a1538 W. Holme Fall & Euill Successe Rebellion (1572) sig. B.j^v I was..as a Gemme without glosse vnpullished to shyne, With senses obtused, and brayne in oppression. 1618 W. Hornby Scourge Drunkennes (1859) 11 Bacchus, thou god of all ebriety Which dost obtuce and blunt the edge of wit. 1660 T. Salusbury tr. D. Bartoli Learned Man defended & Reform'd ii. 299 Who then implumes the Wit, who obtuseth the Fancy. 1888 W. E. Henley Bk. of Verses 158 Battered and obtused With vices, wrinkles, life and work and rags, Each with her inch of clay, two loitering hags Look on dispassionate—critical—somewhat mused. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online December 2020). < adj.?a1425v.c1487
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obtuseadj.

Compounds

† obtusev.