ADJ: oft ADJ to-inf, ADJ for nSomething that is insufficient is not large enough in amount or degree for a particular purpose. [FORMAL]
He decided there was insufficient evidence to justify criminal proceedings...
These efforts were insufficient to contain the burgeoning crisis.Syn:Derived words:insufficiency [[t]ɪ̱nsəfɪ̱ʃ(ə)nsi[/t]] N-UNCOUNT
Late miscarriages are usually not due to hormonal insufficiency.insufficiently ADV ADV adj/-ed
Food that is insufficiently cooked can lead to food poisoning.
English dictionary. 2008.