adjective 1.not
adequate or sufficient; inept or unsuitable.
2.Psychiatry. ineffectual in response to emotional, social, intellectual, and physical demands in the absence of any obvious mental or physical deficiency.
Related forms in·ad·e·quate·ly, adverb
Synonyms
1. inapt, incompetent; incommensurate; defective, imperfect, incomplete.
Antonyms
1. sufficient.