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insufficient

[in-suh-fish-uh nt] /ˌɪn səˈfɪʃ ənt/
adjective
1.
not sufficient; lacking in what is necessary or required:
an insufficient answer.
2.
deficient in force, quality, or amount; inadequate:
insufficient protection.
Origin
1350-1400
1350-1400; Middle English < Late Latin insufficient- (stem of insufficiēns). See in-3, sufficient
Related forms
insufficiently, adverb
Synonyms
1. inadequate, scanty, deficient.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for in-sufficient

insufficient

/ˌɪnsəˈfɪʃənt/
adjective
1.
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
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Word Origin and History for in-sufficient

insufficient

adj.

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
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in-sufficient in Medicine

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

  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.
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Word Value for in

2
3
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