insufficient
adjectiveUK /ˌɪnsəˈfɪʃənt/
US /ˌɪnsəˈfɪʃənt/
Not enough for what is needed.
The food was insufficient for the whole class.
RELATED WORDS
OTHER MEANINGS
2. Not enough in amount or number to meet a requirement.
There was insufficient evidence to prove the claim.
3. Lacking the necessary ability or quality for a task.
His training was insufficient for such a difficult job.
4. Falling short of a standard or expectation.
The lighting in the room was insufficient for reading.