† trestn.¹

Forms: Middle English treste, Middle English–1500s trest.

Etymology: A parallel form to traist n., trist n.¹, trust n. It may in some instances be a variant of traist (which is probable at least for the 16th cent. Scotch use); but is viewed by Morsbach as a variant of trist.

Obsolete.

Confidence, assurance, trust.

ΘΠ

the mind > mental capacity > belief > belief, trust, confidence > [noun]

ylevec888

levec950

hopec1000

trothc1175

trusta1200

trutha1200

tristc1200

beliefa1225

tresta1300

traistinga1340

traistnessa1340

fiance1340

affiancec1350

affyc1380

tristening1382

credencea1393

faitha1393

levenessc1400

confidencec1430

credulity?a1439

trustingc1450

confiance1490

credit1533

fiduce1582

confidency1606

confidingness1682

a1300 Floriz & Bl. 408 Al mi trest is þe upon.

a1500 ( J. Yonge tr. Secreta Secret. (Rawl.) (1898) 198 Iosue..by the grete treste that he had in god, comanded the Sone and the mone.

1570 in J. Cranstoun Satirical Poems Reformation (1891) I. xxiv. 48 To hing, As tratouris sould, for schuitting vnder trest.

a1600 A. Montgomerie Misc. Poems xxx. 23 Sen he took me vnder trest.

This entry has not yet been fully updated (first published 1914; most recently modified version published online September 2021).

trestn.²

Brit.

/trɛst/, U.S.

/trɛst/, Scottish English

/trɛst/

Forms: α. Middle English–1500s treste, 1500s Scottish treist, Middle English– trest. β. Middle English Scottish trast, 1500s Scottish traist. γ. Middle English tryste, Middle English–1500s tryst, 1500s trist. δ. 1500s triss, 1500s–1800s tress.

Etymology: < Old French treste, variant of traste, originally trastre, trestre (12–13th cent. in Godefroy) < Latin transtrum, *trāstrum cross-beam, transom; compare obsolete Italian trasto, plural trasti the benches of a galley, transoms (Florio), which has also lost the second r.

Now only Scottish and dialect.

a. = trestle n. 1.

ΘΚΠ

the world > space > relative position > support > [noun] > that which supports > a stand or support to raise from the ground > with diverging legs

tresta1400

trestlea1400

strestell1531

a1400 Seuyn Sages (W.) 3874 The kinges dener wele was grayd; Thai set trestes and bordes on layd.

c1400 (?c1380) Cleanness l. 832 Þe trestes tylt to þe woȝe & þe table boþe.

1432 in J. Raine Testamenta Eboracensia (1855) II. 22 j met bord w^t j pare trystes.

1488 (c1478) Hary Actis & Deidis Schir William Wallace (Adv.) (1968–9) xi. l. 40 Thai..Past our the bryg Wallace gert wrychtis call, Hewyt trastis, wndyd the passage all.

?1553 (c1501) G. Douglas Palice of Honour (London) iii. l. 1917 in Shorter Poems (1967) 118 Trestis [1579 Edinb. Traistis], formys, and benkis wer pollist plane.

1565 in D. H. Fleming Reformation in Scotl. (1910) 610 Ane aikin burd standand on treistis.

1627 T. May tr. Lucan Pharsalia (new ed.) x. 133 High tresses golden tables bore.

a1700 J. Fraser Chron. Frasers (1905) 197 The trests and supporters of the oaken table.

1825 W. Scott Betrothed xiv, in Tales Crusaders I. 256 When the boards and tresses, on which the viands had been served, were withdrawn.

1886 J. Barrowman Gloss. Sc. Mining Terms Tress, a trestle; the fulcrum for the lever used in boring.

†b. A rest used with a harquebus or other firearm: = trestle n. 4a. Obsolete.

ΘΚΠ

society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > equipment for use with firearms > [noun] > rest or support

gun-stock1495

trestle1497

trest1513

rest1546

musket rest1590

fork1591

shoulder-rest1868

benchrest1892

1513 in J. B. Paul Accts. Treasurer Scotl. (1902) IV. 527 ij cartis with gwnstainis,..the cran with the traistis for the gwn.

1515 in J. B. Paul Accts. Treasurer Scotl. (1903) V. 15 Four gret eschin treis to mak trestis for hacbuschis.

1543–4 in J. B. Paul Accts. Treasurer Scotl. (1908) VIII. 248 For fraucht of thre boittis witht the said artalȝe, having tressis,..and other necessaris convenient thairfore.

2. A tripod; a three-legged stool: = trestle n. 2. Now dialect, and variously used.

ΘΚΠ

society > inhabiting and dwelling > inhabited place > a building > furniture and fittings > seat > stool > [noun] > three-legged stool

trestlec1440

trest1483

tripos1624

tripod1656

1483 Cath. Angl. 393/2 A Tryste (A. A Tristylle), tripos, tristula.

1513 G. Douglas tr. Virgil Æneid iii. vi. 11 God Apollois divinationis, Vnder his trestis and burdis at Delphos schene.

1605 Baldwin's Treat. Morall Philos. (new ed.) i. xvi. f. 10 Certaine fishers found a golden treste [1547 trestell; 1550, etc.: trestle] or triuet, on which was written Sapienti, that is to say: Giue this to a wise man.

a1800 S. Pegge Suppl. Grose's Provinc. Gloss. (1814) Trest, a strong large stool. Lanc.

1882 J. H. Nodal & G. Milnar Gloss. Lancashire Dial. Trest, a strong bench; a butcher's block [cf. sense 1].

This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).

† trestadj.

Etymology: A parallel form to traist adj., trist adj.¹: compare trest n.¹ and trest v.

Obsolete.

1. Firm, strong: = traist adj. 1.

ΘΠ

the world > action or operation > safety > [adjective] > safe or secure > firm or strong

trest1508

valiant1542

1508 Golagros & Gawane (Chepman & Myllar) sig. biiii He..Turnit to ane hie toure that tight wes full trest.

2. Confident, sure: = traist adj. 2.

ΘΠ

the mind > mental capacity > belief > uncertainty, doubt, hesitation > absence of doubt, confidence > [adjective]

sickerc1100

bolda1300

surec1330

trist1340

certain1362

traista1400

tresta1400

ensurec1430

suredc1450

absolute1483

firm1483

resolute1501

assured1523

satisfied1533

unperplexed1558

unblanked1570

resolved1577

secure1578

clear1604

constant1611

ungravelled1611

confidenta1616

definitea1616

fearless1634

decretory1651

positive1658

unbrangled1671

cocksure1672

convinced1685

reliant1702

unbewildereda1807

positivistic1893

hensure1929

tooting1932

a1400 (a1325) Cursor Mundi (Vesp.) l. 17219 Þou mai be ful trest to spede.

3. Trusty, faithful: = traist adj. 3.

ΘΠ

society > morality > duty or obligation > recognition of duty > faithfulness or trustworthiness > [adjective]

soothfastc825

truefastOE

i-treowec1000

unfakenOE

trueOE

sickerc1100

trigc1175

strustya1250

steel to the (very) backa1300

true as steela1300

certainc1325

well-provedc1325

surec1330

traistc1330

tristc1330

trustya1350

faithfula1382

veryc1385

sada1387

discreet1387

trust1389

trothfulc1390

tristya1400

proveda1425

good-heartedc1425

well-trusted?a1439

tristfulc1440

authorizablea1475

faithworthy?1526

tentik1534

fidele1539

truthfulc1550

suresby1553

responsible1558

trestc1560

reliable1569

cocksurea1575

sound1581

trustful1582

truepenny1589

true (also good, sure) as touch1590

probable1596

confident1605

trustable1606

axiopistical1611

loyala1616

reposeful1627

confiding1645

fiducial1647

laudable1664

safe1667

accountable1683

serious1693

sponsible1721

dependable1730

unfailing1798

truthya1802

trustworthy1829

all right1841

stand-up1841

falsehood-free1850

right1856

proven1872

bankable1891

secure1954

c1560 A. Scott Poems (S.T.S.) ix. 28 Ane constant hairt bayth trest & trew.

1566 in T. Thomson Coll. Inventories Royal Wardrobe (1815) 177 Service done..be our trest cousing Johnne now erle of Mar.

1608 T. Hudson tr. G. de S. Du Bartas Ivdith v. 73 in J. Sylvester Deuine Weekes & Wks. (new ed.) So shall you finde me,..as faithfull, secret, trest, and trew.

Derivatives

† ˈtrestly adv. Obsolete confidently.

ΘΠ

the mind > mental capacity > belief > uncertainty, doubt, hesitation > absence of doubt, confidence > [adverb]

trulyOE

boldlyc1175

sickerlyc1275

tristly1340

redelya1375

redilya1375

surelyc1380

tristilyc1380

certainc1384

faithfullyc1384

trustilyc1390

certainlya1400

trustlya1400

undoubtinglyc1400

absolutely?a1425

positivelyc1443

assuredly1508

traist1508

traistfully1508

crousea1525

constantlya1538

resolutely1540

suredly1551

trestly1568

cocksure1579

resolvedly1610

assurantly1619

emphatically1629

decretorily1660

convincedly1812

unmisgivingly1842

solid1937

1568 in W. T. Ritchie Bannatyne MS (1928) II. 213 Thair is nocht faithfulnes fundin in to this erd; Now is nocht thre may trestly trow in the ferd.

This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2018).

† trestv.

Forms: Middle English treste(n, Middle English–1500s trest; also Middle English past tense treste.

Etymology: A parallel form to traist v., trist v., trust v.Morsbach considers it a phonetic variant of trist. But in the northern and Scots examples it may be merely a variant spelling of traist, perhaps under English influence.

Obsolete.

1. reflexive. To commit oneself securely, to trust (in, of, on): cf. traist v. 1.

ΘΠ

the mind > mental capacity > belief > belief, trust, confidence > trust [verb (reflexive)]

trowc950

tresta1250

affyc1350

grounda1387

sickera1400

traista1400

repose1539

stay1549

rest1574

a1250 Prov. Ælfred 505 in Old Eng. Misc. 132 On him þu maist þe tresten.

a1500 ( J. Yonge tr. Secreta Secret. (Rawl.) (1898) 198 That neuer he shold hym treste of the helpe of his god..This kynge Ezechie hym trested in god.

a. intransitive. To trust (of, to, or with infinitive): = traist v. 2.

ΘΠ

the mind > mental capacity > belief > belief, trust, confidence > trust [verb (intransitive)]

hopec888

believeOE

trowc1000

levec1175

strusta1250

trista1250

trestc1275

traista1300

affyc1330

assurec1374

restc1384

sover1488

confidea1525

faith1555

relyc1571

build1573

c1275 Laȝamon Brut 17941 For sealde he aswint Þat to him seolue tresteþ.

a1400 Sir Beues (A.) 3520 Meche a [= he] treste to Arondel.

1405 in Roy. & Hist. Lett. Hen. IV (Rolls) 159 Treste ȝe nought to no Leutenaunt.

c1425 XI Pains of Hell 347 in Old Eng. Misc. 221 Y pray ȝou seris trest wele hereto.

c1475 (?c1400) Apol. Lollard Doctr. (1842) 66 Wan þe man trestiþ of þis absolucoun, wening him siker..& mendiþ not.

c1560 A. Scott Poems (S.T.S.) xxii. 17 Ay tresting for to speid.

b. transitive with simple obj. (? originally dative), or clause: = traist v. 2b.

ΘΠ

the mind > mental capacity > belief > belief, trust, confidence > have confidence in, trust [verb (transitive)]

trowc888

trista1272

trestc1275

ween1340

affy?a1400

betrustc1440

strust1450

traist1473

atristc1475

intrastea1500

betrow?1567

confide1632

salve1646

bank1872

c1275 Laȝamon Brut 2351 Ac he nam one hired man Þat wel he treste con.

c1560 A. Scott Poems (S.T.S.) xxx. 8 Trest weill this taill is trew.

1568 W. Dunbar in W. T. Ritchie Bannatyne MS (1928) II. 146 Is no man thair that trestis [a1586 trowis] ane vther.

1570 R. Sempill Poysonit Schot (single sheet) He may I trest, set vs at rest.

This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2021).

n.¹a1300

n.²a1400

adj.a1400

v.a1250

单词	trest
释义	† trestn.¹ Forms: Middle English treste, Middle English–1500s trest. Etymology: A parallel form to traist n., trist n.¹, trust n. It may in some instances be a variant of traist (which is probable at least for the 16th cent. Scotch use); but is viewed by Morsbach as a variant of trist. Obsolete. Confidence, assurance, trust. ΘΠ the mind > mental capacity > belief > belief, trust, confidence > [noun] ylevec888 levec950 hopec1000 trothc1175 trusta1200 trutha1200 tristc1200 beliefa1225 tresta1300 traistinga1340 traistnessa1340 fiance1340 affiancec1350 affyc1380 tristening1382 credencea1393 faitha1393 levenessc1400 confidencec1430 credulity?a1439 trustingc1450 confiance1490 credit1533 fiduce1582 confidency1606 confidingness1682 a1300 Floriz & Bl. 408 Al mi trest is þe upon. a1500 ( J. Yonge tr. Secreta Secret. (Rawl.) (1898) 198 Iosue..by the grete treste that he had in god, comanded the Sone and the mone. 1570 in J. Cranstoun Satirical Poems Reformation (1891) I. xxiv. 48 To hing, As tratouris sould, for schuitting vnder trest. a1600 A. Montgomerie Misc. Poems xxx. 23 Sen he took me vnder trest. This entry has not yet been fully updated (first published 1914; most recently modified version published online September 2021). trestn.² Brit. /trɛst/, U.S. /trɛst/, Scottish English /trɛst/ Forms: α. Middle English–1500s treste, 1500s Scottish treist, Middle English– trest. β. Middle English Scottish trast, 1500s Scottish traist. γ. Middle English tryste, Middle English–1500s tryst, 1500s trist. δ. 1500s triss, 1500s–1800s tress. Etymology: < Old French treste, variant of traste, originally trastre, trestre (12–13th cent. in Godefroy) < Latin transtrum, trāstrum cross-beam, transom; compare obsolete Italian trasto, plural trasti* the benches of a galley, transoms (Florio), which has also lost the second r. Now only Scottish and dialect. 1. a. = trestle n. 1. ΘΚΠ the world > space > relative position > support > [noun] > that which supports > a stand or support to raise from the ground > with diverging legs tresta1400 trestlea1400 strestell1531 a1400 Seuyn Sages (W.) 3874 The kinges dener wele was grayd; Thai set trestes and bordes on layd. c1400 (?c1380) Cleanness l. 832 Þe trestes tylt to þe woȝe & þe table boþe. 1432 in J. Raine Testamenta Eboracensia (1855) II. 22 j met bord w^t j pare trystes. 1488 (c1478) Hary Actis & Deidis Schir William Wallace (Adv.) (1968–9) xi. l. 40 Thai..Past our the bryg Wallace gert wrychtis call, Hewyt trastis, wndyd the passage all. ?1553 (c1501) G. Douglas Palice of Honour (London) iii. l. 1917 in Shorter Poems (1967) 118 Trestis [1579 Edinb. Traistis], formys, and benkis wer pollist plane. 1565 in D. H. Fleming Reformation in Scotl. (1910) 610 Ane aikin burd standand on treistis. 1627 T. May tr. Lucan Pharsalia (new ed.) x. 133 High tresses golden tables bore. a1700 J. Fraser Chron. Frasers (1905) 197 The trests and supporters of the oaken table. 1825 W. Scott Betrothed xiv, in Tales Crusaders I. 256 When the boards and tresses, on which the viands had been served, were withdrawn. 1886 J. Barrowman Gloss. Sc. Mining Terms Tress, a trestle; the fulcrum for the lever used in boring. †b. A rest used with a harquebus or other firearm: = trestle n. 4a. Obsolete. ΘΚΠ society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > equipment for use with firearms > [noun] > rest or support gun-stock1495 trestle1497 trest1513 rest1546 musket rest1590 fork1591 shoulder-rest1868 benchrest1892 1513 in J. B. Paul Accts. Treasurer Scotl. (1902) IV. 527 ij cartis with gwnstainis,..the cran with the traistis for the gwn. 1515 in J. B. Paul Accts. Treasurer Scotl. (1903) V. 15 Four gret eschin treis to mak trestis for hacbuschis. 1543–4 in J. B. Paul Accts. Treasurer Scotl. (1908) VIII. 248 For fraucht of thre boittis witht the said artalȝe, having tressis,..and other necessaris convenient thairfore. 2. A tripod; a three-legged stool: = trestle n. 2. Now dialect, and variously used. ΘΚΠ society > inhabiting and dwelling > inhabited place > a building > furniture and fittings > seat > stool > [noun] > three-legged stool trestlec1440 trest1483 tripos1624 tripod1656 1483 Cath. Angl. 393/2 A Tryste (A. A Tristylle), tripos, tristula. 1513 G. Douglas tr. Virgil Æneid iii. vi. 11 God Apollois divinationis, Vnder his trestis and burdis at Delphos schene. 1605 Baldwin's Treat. Morall Philos. (new ed.) i. xvi. f. 10 Certaine fishers found a golden treste [1547 trestell; 1550, etc.: trestle] or triuet, on which was written Sapienti, that is to say: Giue this to a wise man. a1800 S. Pegge Suppl. Grose's Provinc. Gloss. (1814) Trest, a strong large stool. Lanc. 1882 J. H. Nodal & G. Milnar Gloss. Lancashire Dial. Trest, a strong bench; a butcher's block [cf. sense 1]. This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022). † trestadj. Etymology: A parallel form to traist adj., trist adj.¹: compare trest n.¹ and trest v. Obsolete. 1. Firm, strong: = traist adj. 1. ΘΠ the world > action or operation > safety > [adjective] > safe or secure > firm or strong trest1508 valiant1542 1508 Golagros & Gawane (Chepman & Myllar) sig. biiii He..Turnit to ane hie toure that tight wes full trest. 2. Confident, sure: = traist adj. 2. ΘΠ the mind > mental capacity > belief > uncertainty, doubt, hesitation > absence of doubt, confidence > [adjective] sickerc1100 bolda1300 surec1330 trist1340 certain1362 traista1400 tresta1400 ensurec1430 suredc1450 absolute1483 firm1483 resolute1501 assured1523 satisfied1533 unperplexed1558 unblanked1570 resolved1577 secure1578 clear1604 constant1611 ungravelled1611 confidenta1616 definitea1616 fearless1634 decretory1651 positive1658 unbrangled1671 cocksure1672 convinced1685 reliant1702 unbewildereda1807 positivistic1893 hensure1929 tooting1932 a1400 (a1325) Cursor Mundi (Vesp.) l. 17219 Þou mai be ful trest to spede. 3. Trusty, faithful: = traist adj. 3. ΘΠ society > morality > duty or obligation > recognition of duty > faithfulness or trustworthiness > [adjective] soothfastc825 truefastOE i-treowec1000 unfakenOE trueOE sickerc1100 trigc1175 strustya1250 steel to the (very) backa1300 true as steela1300 certainc1325 well-provedc1325 surec1330 traistc1330 tristc1330 trustya1350 faithfula1382 veryc1385 sada1387 discreet1387 trust1389 trothfulc1390 tristya1400 proveda1425 good-heartedc1425 well-trusted?a1439 tristfulc1440 authorizablea1475 faithworthy?1526 tentik1534 fidele1539 truthfulc1550 suresby1553 responsible1558 trestc1560 reliable1569 cocksurea1575 sound1581 trustful1582 truepenny1589 true (also good, sure) as touch1590 probable1596 confident1605 trustable1606 axiopistical1611 loyala1616 reposeful1627 confiding1645 fiducial1647 laudable1664 safe1667 accountable1683 serious1693 sponsible1721 dependable1730 unfailing1798 truthya1802 trustworthy1829 all right1841 stand-up1841 falsehood-free1850 right1856 proven1872 bankable1891 secure1954 c1560 A. Scott Poems (S.T.S.) ix. 28 Ane constant hairt bayth trest & trew. 1566 in T. Thomson Coll. Inventories Royal Wardrobe (1815) 177 Service done..be our trest cousing Johnne now erle of Mar. 1608 T. Hudson tr. G. de S. Du Bartas Ivdith v. 73 in J. Sylvester Deuine Weekes & Wks. (new ed.) So shall you finde me,..as faithfull, secret, trest, and trew. Derivatives † ˈtrestly adv. Obsolete confidently. ΘΠ the mind > mental capacity > belief > uncertainty, doubt, hesitation > absence of doubt, confidence > [adverb] trulyOE boldlyc1175 sickerlyc1275 tristly1340 redelya1375 redilya1375 surelyc1380 tristilyc1380 certainc1384 faithfullyc1384 trustilyc1390 certainlya1400 trustlya1400 undoubtinglyc1400 absolutely?a1425 positivelyc1443 assuredly1508 traist1508 traistfully1508 crousea1525 constantlya1538 resolutely1540 suredly1551 trestly1568 cocksure1579 resolvedly1610 assurantly1619 emphatically1629 decretorily1660 convincedly1812 unmisgivingly1842 solid1937 1568 in W. T. Ritchie Bannatyne MS (1928) II. 213 Thair is nocht faithfulnes fundin in to this erd; Now is nocht thre may trestly trow in the ferd. This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2018). † trestv. Forms: Middle English treste(n, Middle English–1500s trest; also Middle English past tense treste. Etymology: A parallel form to traist v., trist v., trust v.Morsbach considers it a phonetic variant of trist. But in the northern and Scots examples it may be merely a variant spelling of traist, perhaps under English influence. Obsolete. 1. reflexive. To commit oneself securely, to trust (in, of, on): cf. traist v. 1. ΘΠ the mind > mental capacity > belief > belief, trust, confidence > trust [verb (reflexive)] trowc950 tresta1250 affyc1350 grounda1387 sickera1400 traista1400 repose1539 stay1549 rest1574 a1250 Prov. Ælfred 505 in Old Eng. Misc. 132 On him þu maist þe tresten. a1500 ( J. Yonge tr. Secreta Secret. (Rawl.) (1898) 198 That neuer he shold hym treste of the helpe of his god..This kynge Ezechie hym trested in god. 2. a. intransitive. To trust (of, to, or with infinitive): = traist v. 2. ΘΠ the mind > mental capacity > belief > belief, trust, confidence > trust [verb (intransitive)] hopec888 believeOE trowc1000 levec1175 strusta1250 trista1250 trestc1275 traista1300 affyc1330 assurec1374 restc1384 sover1488 confidea1525 faith1555 relyc1571 build1573 c1275 Laȝamon Brut 17941 For sealde he aswint Þat to him seolue tresteþ. a1400 Sir Beues (A.) 3520 Meche a [= he] treste to Arondel. 1405 in Roy. & Hist. Lett. Hen. IV (Rolls) 159 Treste ȝe nought to no Leutenaunt. c1425 XI Pains of Hell 347 in Old Eng. Misc. 221 Y pray ȝou seris trest wele hereto. c1475 (?c1400) Apol. Lollard Doctr. (1842) 66 Wan þe man trestiþ of þis absolucoun, wening him siker..& mendiþ not. c1560 A. Scott Poems (S.T.S.) xxii. 17 Ay tresting for to speid. b. transitive with simple obj. (? originally dative), or clause: = traist v. 2b. ΘΠ the mind > mental capacity > belief > belief, trust, confidence > have confidence in, trust [verb (transitive)] trowc888 trista1272 trestc1275 ween1340 affy?a1400 betrustc1440 strust1450 traist1473 atristc1475 intrastea1500 betrow?1567 confide1632 salve1646 bank1872 c1275 Laȝamon Brut 2351 Ac he nam one hired man Þat wel he treste con. c1560 A. Scott Poems (S.T.S.) xxx. 8 Trest weill this taill is trew. 1568 W. Dunbar in W. T. Ritchie Bannatyne MS (1928) II. 146 Is no man thair that trestis [a1586 trowis] ane vther. 1570 R. Sempill Poysonit Schot (single sheet) He may I trest, set vs at rest. This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2021). < n.¹a1300n.²a1400adj.a1400v.a1250
随便看	rentability rentable rentabler rentablest rentacop rentacrowd rentage rental rental agency rental agent rental boll rental book rental car rental duty rental feu duty rental house rental income rental land rental library rental mail rental right rental roll rentalest rentaller rentallers

† trestn.1

trestn.2

† trestadj.

Derivatives

† trestv.

† trestn.¹

trestn.²