adj

insufficient

ihn-suh-FIH-shuhnt

adj

Not enough for what is needed.

"The evidence was insufficient to support a conviction."

"She was let go due to insufficient performance reviews."

How to Use Insufficient

Learner’s notes

In plain EnglishLacking enough quantity, quality, or ability to meet a requirement.

Common pairings

insufficient evidence insufficient funds insufficient data

more insufficient comparative, most insufficient superlative

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The evidence was _____ to support a conviction.

From Latin insufficiens — in- ("not") + sufficiens ("sufficient").

orient ancient patient salient ambient lenient obedient nutrient gradient sentient impatient transient