in ‧ suf ‧ fi ‧ cient AC /ˌɪnsəˈfɪʃ ə nt◂/ BrE AmE adjective formal
[ Word Family: verb : ↑ suffice ; noun : ↑ sufficiency ; adverb : ↑ sufficiently ≠ ↑ insufficiently ; adjective : ↑ sufficient ≠ ↑ insufficient ]
not enough, or not great enough:
Insufficient resources have been devoted to the health service.
insufficient for
His salary was insufficient for their needs.
insufficient (something) to do something
The heating is insufficient to kill the bacteria.
At the moment, there’s insufficient evidence to arrest anyone.
—insufficiently adverb
—insufficiency noun [singular, uncountable]