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  1. adequate for the purpose; enough: sufficient proof; sufficient protection.
  2. Logic. (of a condition) such that its existence leads to the occurrence of a given event or the existence of a given thing.Compare necessary(def 4c).
  3. Archaic. competent.

Origin of sufficient

1350–1400; Middle English < Latin sufficient- (stem of sufficiēns), present participle of sufficere to suffice, equivalent to suf- suf- + -fici-, present stem of -ficere, combining form of facere to make, do1 + -ent- -ent
Related formssuf·fi·cient·ly, adverbo·ver·suf·fi·cient, adjectiveo·ver·suf·fi·cient·ly, adverbpre·suf·fi·cient, adjectivepre·suf·fi·cient·ly, adverbqua·si-suf·fi·cient, adjectivequa·si-suf·fi·cient·ly, adverbsu·per·suf·fi·cient, adjectivesu·per·suf·fi·cient·ly, adverb

Antonyms for sufficient Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sufficient

Contemporary Examples of sufficient

Historical Examples of sufficient

British Dictionary definitions for sufficient


  1. enough to meet a need or purpose; adequate
  2. logic (of a condition) assuring the truth of a statement; requiring but not necessarily required by some other state of affairsCompare necessary (def. 3e)
  3. archaic competent; capable
  1. a sufficient quantity
Derived Formssufficiently, adverb

Word Origin for sufficient

C14: from Latin sufficiens supplying the needs of, from sufficere to suffice
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sufficient

early 14c., from Old French sufficient, from Latin sufficiens, present participle of sufficere (see suffice).

Online Etymology Dictionary, © 2010 Douglas Harper