Meaning of “insufficient” in the English Dictionary

"insufficient" in British English

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insufficientadjective

uk /ˌɪn.səˈfɪʃ.ənt/ us /ˌɪn.səˈfɪʃ.ənt/

(Definition of “insufficient” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"insufficient" in American English

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insufficientadjective [ not gradable ]

us /ˌɪn·səˈfɪʃ·ənt/

not enough in amount, strength, or quality; less than is needed:

There was insufficient evidence, so we had to find him not guilty.
insufficiently
adverb [ not gradable ] us /ˌɪn·səˈfɪʃ·ənt·li/

Many of the students got low grades because they were insufficiently prepared.

(Definition of “insufficient” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"insufficient" in Business English

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insufficientadjective

uk /ˌɪnsəˈfɪʃənt/ us

not enough, or not big or important enough for a particularpurpose:

Their plan may mature with insufficient funds to pay off their mortgages.
This would leave insufficient time to release any new information about the shares.
insufficiently
adverb

For years the health service has been insufficiently funded.

(Definition of “insufficient” from the Cambridge Business English Dictionary © Cambridge University Press)