necessary

From Middle English necessarye, from Old French necessaire, from Latin necessārius (“unavoidable, inevitable, required”), variant of necesse (“unavoidable, inevitable”), probably from ne or non cessum, from the perfect passive participle of cēdō (“yield; avoid, withdraw”); see cede.

Older use as a noun in reference to an outhouse or lavatory under the influence of English and Latin necessārium, a medieval term for the place for monks’ “unavoidable” business, usually located behind or attached to monastic dormitories.

• (Received Pronunciation) IPA^(key): /ˈnɛsəsɹi/, /ˈnɛsəˌsɛɹi/
• (US) IPA^(key): /ˈnɛsəˌsɛɹi/

• Audio (US)

  (file)

• (nonstandard) IPA^(key): /ˈnɛsəɹi/

necessary (comparative necessarier or more necessary, superlative necessariest or most necessary)

1. Required, essential, whether logically inescapable or needed in order to achieve a desired result or avoid some penalty.

   Synonyms: see Thesaurus:requisite

   Antonym: unnecessary

   Although I wished to think that all was false, it was yet necessary that I, who thus thought, must in some sense exist.

   It is absolutely necessary that you call and confirm your appointment.

   • c. 1605–1608, William Shakespeare, “The Life of Tymon of Athens”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene vi], lines 1258-60:

     1.Sen. ...The faults Bloody:
     'Tis necessary he should dye:
     Nothing imboldens sinne so much, as Mercy.

2. Unavoidable, inevitable.

   Synonyms: inevitable, natural

   Antonyms: evitable, incidental, impossible

   If it is absolutely necessary to use public computers, you should plan ahead and forward your e-mail to a temporary, disposable account.

   • 1599 (first performance), William Shakespeare, “The Tragedie of Iulius Cæsar”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act II, scene ii], lines 1020-25:

     Cæs. Cowards dye many times before their deaths,
     The valiant neuer taste of death but once:
     Of all the Wonders that I yet haue heard,
     It seemes to me most strange that men should feare,
     Seeing that death, a necessary end
     Will come, when it will come.

3. (obsolete) Determined, involuntary: acting from compulsion rather than free will.
   • 1871, Richard Holt Hutton, Essays, volume I, page 53:

     But that a necessary being should give birth to a being with any amount, however limited, of moral freedom, is infinitely less conceivable than that parents of the insect or fish type should give birth to a perfect mammal.

necessary (plural necessaries or necessarys)

1. (chiefly UK, Rhode Island, Massachusetts, Maine, archaic, euphemistic, usually with the definite article) A place to do the "necessary" business of urination and defecation: an outhouse or lavatory.

   Synonyms: see Thesaurus:bathroom

   • 2009, Don Corbly, The Last Colonials, Lulu.com, →ISBN, page 67:

     It soon became fashionable for even the poorest families to have a necessary not far from their cabin. […] The more affluent settlers painted their necessarys in bright colors and carved their names on the doors.

2. (obsolete) Necessity.
   • 1858, Rhode Island, Records of the Colony of Rhode Island and Providence Plantations, in New England: 1678-1706, page 285:

     […] loss of that whole dominion of New England, and consequently of their Majesties' other American Plantations, endangered not only by the want of provisions, but by the many ships, vessels, seamen and other necessarys in New England, ...

   • 1922, Massachusetts Commission on the Necessaries of Life, Report of the Special Commission on the Necessaries of Life:

• necessary house; necessary place, necessary stool, necessary vault (obsolete)

• “necessary”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• “necessary”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.