'Insufficiently' definitions:

Definition of 'insufficiently'

From: WordNet
adverb
To an insufficient degree; "he was insufficiently prepared" [ant: sufficiently]

Definition of 'Insufficiently'

From: GCIDE
  • Insufficiently \In`suf*fi"cient*ly\, adv. In an insufficient manner or degree; unadequately. [1913 Webster]