Try Our Apps


90s Slang You Should Know


[in-suh-fish-uh nt] /ˌɪn səˈfɪʃ ənt/
not sufficient; lacking in what is necessary or required:
an insufficient answer.
deficient in force, quality, or amount; inadequate:
insufficient protection.
Origin of insufficient
1350-1400; Middle English < Late Latin insufficient- (stem of insufficiēns). See in-3, sufficient
Related forms
insufficiently, adverb
1. inadequate, scanty, deficient. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for insufficiently
Contemporary Examples
Historical Examples
  • It may be asked of me, whether I hold it right to speak thus hastily and insufficiently respecting the matter in question?

  • Indeed the whole character of Jane is insufficiently presented.

  • The window of this room, which is known as a Berliner Zimmer, is always in one corner and lights it insufficiently.

    Home Life in Germany Mrs. Alfred Sidgwick
  • He thought that the Delaware River was insufficiently protected.

  • It was a pretty room for those days, though we should now consider it but insufficiently furnished.

    A German Pompadour Marie Hay
British Dictionary definitions for insufficiently


not sufficient; inadequate or deficient
Derived Forms
insufficiently, adverb
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
Cite This Source
Word Origin and History for insufficiently



late 14c., from Old French insufficient (14c.), from Latin insufficientem (nominative insufficiens) "insufficient," from in- "not, opposite of" (see in- (1)) + sufficientem (see sufficient). Originally of persons, "inadequate, unable;" of things, from late 15c. Related: Insufficiently.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
insufficiently in Medicine

insufficient in·suf·fi·cient (ĭn'sə-fĭsh'ənt)

  1. Not sufficient.

  2. Incapable of proper functioning.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for insufficient

Few English speakers likely know this word

Word Value for insufficiently

Scrabble Words With Friends

Nearby words for insufficiently