Answer: inadequate

AnswerCrossword Clue
INADEQUATEInsufficient
INADEQUATELacking
INADEQUATENot enough
INADEQUATENot up to snuff
INADEQUATEDeficient.
INADEQUATENot enough.
INADEQUATENot up to
INADEQUATEUnable to make the grade
INADEQUATEWanting
inadequatenot adequate / an incompetent person
inadequateineffectual in response to emotional, social, intellectual, and physical demands in the absence of any obvious mental or physical deficiency
inadequatenot adequate or sufficient; inept or unsuitable