requiredadj.

Brit.

/rᵻˈkwʌɪəd/, U.S.

/rəˈkwaɪ(ə)rd/,

/riˈkwaɪ(ə)rd/

Origin: Formed within English, by derivation. Etymons: require v., -ed suffix¹.

Etymology: < require v. + -ed suffix¹. Compare earlier requirable adj., requise adj., requisite adj., and also earlier unrequired adj.

That is required, requisite, necessary; desired, sought after.

ΘΚΠ

the mind > will > necessity > condition of being necessary > need or want > [adjective] > needed or required

required1540

postulated1860

needed1887

c1425 J. Lydgate Troyyes Bk. (Augustus A.iv) i. l. 2405 But more frely, with hert ful entere, Liste vnrequered on my wo to rewe.]

1540 J. Palsgrave in tr. G. Gnapheus Comedye of Acolastus Ep. Ded. sig. aiii The playnly apparant ignorance & want of a required sufficiencye of many, whiche in priuate places take vpon theym to teache.

1593 H. Lok Sundry Christian Passions To Rdr. sig. Avi I do not greatly seeke the praise of a curious Architect or, neither..could I attaine to the required obseruances that way.

a1616 W. Shakespeare Othello (1622) ii. i. 232 Now for want of these requir'd conueniences, her delicate tendernesse will finde it selfe abus'd.

a1616 W. Shakespeare All's Well that ends Well (1623) ii. v. 60 The ministration, and required office.

1722 W. Sewel Hist. Quakers iii. 80 Some of the Soldiers..took the requir'd Oath.

1791 Philos. Trans. 1790 (Royal Soc.) 80 367 Cutting out the rolled plated metal into pieces of the required forms and sizes.

1815 R. Trevithick in Brit. Patent 3922 (1855) 5 A worm or screw..which shall be made to revolve with great speed in a line with the required motion of the ship.

1849 J. F. W. Herschel Outl. Astron. §198 Then will the final arc A. B. C. D. read off on the circle be ten times the required angle.

1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 291 The points H and K will lie on the required conic.

1904 J. Conrad Nostromo iii. iii. 304 Charles Gould, with only a short hesitation, pronounced the required pledge.

1956 I. Murdoch Flight from Enchanter viii. 102 The answers would, when pieced together, provide the required information.

2005 D. Cruickshank Around World in 80 Treasures 231 A lightweight 984 cc air-cooled engine that supplied the required speed and achieved 33 miles per gallon of fuel.

Compounds

required reading n. literature which must be read for an educational course or in order to gain an understanding of a subject; spec. reading which is essential for a person in a particular position or occupation.

ΘΚΠ

society > education > learning > study > subject or object of study > [noun] > required reading

reading list1859

required reading1881

1881 Southwestern Christian Advocate (New Orleans) 28 Apr. 1/4 The Sunday-School Advocate will contain in each semi-monthly issue, several columns of L. R. U. [i.e. Lyceum Reading Union] ‘required’ reading for children.

1930 Publishers' Weekly 15 Mar. 1547/1 Some of the important courses in our colleges and universities cannot be taught successfully..because of the lack of a sufficient number of books for required reading.

1954 N.Y. Times Bk. Rev. 31 Jan. 1/1 Here is a book that should be required reading for Democrats in 1954.

1976 J. Wainwright Walther P. 38 62 The usual sort of stuff which..was ‘required reading’ for any moderate education.

2004 M. Oke Times of our Lives 300 Students are formed into groups of Red Guards and the Little Red Book becomes required reading.

Derivatives

reˈquiredness n. the fact or quality of being required; necessity, obligatoriness.

ΘΚΠ

the mind > will > necessity > condition of being necessary > [noun]

needOE

needfulnessa1400

necess?a1525

necessariness1552

requisiteness1566

necessitya1572

essence1605

essentialness1640

essentiality1646

necessitation1648

requirement1659

need-be1728

indispensability1793

indispensableness1833

indispensibleness1860

egence1865

requiredness1935

1935 Internat. Jrnl. Ethics 45 304 Tradition is, as it were, the substitute for intrinsic requiredness in determining the choice of a particular means.

1946 C. Morris Signs, Lang. & Behavior iii. 63 A command such as ‘Come here!’ may signify with high constancy the requiredness of the response which it prescribes.

1990 T. Honderich Mind & Brain (BNC) 21 In so far as the requiredness of causal circumstances to effects is concerned, it will be enough to keep in mind only the great majority.

This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022).

单词	required
释义	requiredadj. Brit. /rᵻˈkwʌɪəd/, U.S. /rəˈkwaɪ(ə)rd/, /riˈkwaɪ(ə)rd/ Origin: Formed within English, by derivation. Etymons: require v., -ed suffix¹. Etymology: < require v. + -ed suffix¹. Compare earlier requirable adj., requise adj., requisite adj., and also earlier unrequired adj. That is required, requisite, necessary; desired, sought after. ΘΚΠ the mind > will > necessity > condition of being necessary > need or want > [adjective] > needed or required required1540 postulated1860 needed1887 c1425 J. Lydgate Troyyes Bk. (Augustus A.iv) i. l. 2405 But more frely, with hert ful entere, Liste vnrequered on my wo to rewe.] 1540 J. Palsgrave in tr. G. Gnapheus Comedye of Acolastus Ep. Ded. sig. aiii The playnly apparant ignorance & want of a required sufficiencye of many, whiche in priuate places take vpon theym to teache. 1593 H. Lok Sundry Christian Passions To Rdr. sig. Avi I do not greatly seeke the praise of a curious Architect or, neither..could I attaine to the required obseruances that way. a1616 W. Shakespeare Othello (1622) ii. i. 232 Now for want of these requir'd conueniences, her delicate tendernesse will finde it selfe abus'd. View more context for this quotation a1616 W. Shakespeare All's Well that ends Well (1623) ii. v. 60 The ministration, and required office. View more context for this quotation 1722 W. Sewel Hist. Quakers iii. 80 Some of the Soldiers..took the requir'd Oath. 1791 Philos. Trans. 1790 (Royal Soc.) 80 367 Cutting out the rolled plated metal into pieces of the required forms and sizes. 1815 R. Trevithick in Brit. Patent 3922 (1855) 5 A worm or screw..which shall be made to revolve with great speed in a line with the required motion of the ship. 1849 J. F. W. Herschel Outl. Astron. §198 Then will the final arc A. B. C. D. read off on the circle be ten times the required angle. 1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 291 The points H and K will lie on the required conic. 1904 J. Conrad Nostromo iii. iii. 304 Charles Gould, with only a short hesitation, pronounced the required pledge. 1956 I. Murdoch Flight from Enchanter viii. 102 The answers would, when pieced together, provide the required information. 2005 D. Cruickshank Around World in 80 Treasures 231 A lightweight 984 cc air-cooled engine that supplied the required speed and achieved 33 miles per gallon of fuel. Compounds required reading n. literature which must be read for an educational course or in order to gain an understanding of a subject; spec. reading which is essential for a person in a particular position or occupation. ΘΚΠ society > education > learning > study > subject or object of study > [noun] > required reading reading list1859 required reading1881 1881 Southwestern Christian Advocate (New Orleans) 28 Apr. 1/4 The Sunday-School Advocate will contain in each semi-monthly issue, several columns of L. R. U. [i.e. Lyceum Reading Union] ‘required’ reading for children. 1930 Publishers' Weekly 15 Mar. 1547/1 Some of the important courses in our colleges and universities cannot be taught successfully..because of the lack of a sufficient number of books for required reading. 1954 N.Y. Times Bk. Rev. 31 Jan. 1/1 Here is a book that should be required reading for Democrats in 1954. 1976 J. Wainwright Walther P. 38 62 The usual sort of stuff which..was ‘required reading’ for any moderate education. 2004 M. Oke Times of our Lives 300 Students are formed into groups of Red Guards and the Little Red Book becomes required reading. Derivatives reˈquiredness n. the fact or quality of being required; necessity, obligatoriness. ΘΚΠ the mind > will > necessity > condition of being necessary > [noun] needOE needfulnessa1400 necess?a1525 necessariness1552 requisiteness1566 necessitya1572 essence1605 essentialness1640 essentiality1646 necessitation1648 requirement1659 need-be1728 indispensability1793 indispensableness1833 indispensibleness1860 egence1865 requiredness1935 1935 Internat. Jrnl. Ethics 45 304 Tradition is, as it were, the substitute for intrinsic requiredness in determining the choice of a particular means. 1946 C. Morris Signs, Lang. & Behavior iii. 63 A command such as ‘Come here!’ may signify with high constancy the requiredness of the response which it prescribes. 1990 T. Honderich Mind & Brain (BNC) 21 In so far as the requiredness of causal circumstances to effects is concerned, it will be enough to keep in mind only the great majority. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < adj.1540
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