What is the meaning of insufficiency?

noun

• A lack of competence.
  • usage: "pointed out the insufficiencies in my report"; "juvenile offenses often reflect an inadequacy in the parents"
  • synonyms: inadequacy
• Pathology) inability of a bodily part or organ to function normally. (
• Lack of an adequate quantity or number.
  • usage: "the inadequacy of unemployment benefits"
  • synonyms: inadequacy, deficiency