insufficiency in WordNet English dictionary

1. lack of an adequate quantity or number
   "the inadequacy of unemployment benefits"
   insufficiency  inadequacy  deficiency 
   
2. a lack of competence
   "pointed out the insufficiencies in my report"; "juvenile offenses often reflect an inadequacy in the parents"
   insufficiency  inadequacy 
   
3. (pathology) inability of a bodily part or organ to function normally
   insufficiency