inadequacy

Noun

• unsatisfactoriness by virtue of being inadequate

• a lack of competence
  • pointed out the insufficiencies in my report
    
  • juvenile offenses often reflect an inadequacy in the parents
    

• lack of an adequate quantity or number
  • the inadequacy of unemployment benefits
    

Related words

• Synonyms: 
  inadequateness , insufficiency , deficiency
• Antonyms: 
  adequacy , adequateness , sufficiency