insufficiency, inadequacy, deficiency (noun)

lack of an adequate quantity or number

"the inadequacy of unemployment benefits"

insufficiency, inadequacy (noun)

a lack of competence

"pointed out the insufficiencies in my report"; "juvenile offenses often reflect an inadequacy in the parents"

inadequacy, inadequateness (noun)

unsatisfactoriness by virtue of being inadequate

inadequacy (Noun)

the state of being inadequate

inadequacy (Noun)

a shortage of required material

inadequacy (Noun)

a lack of competence or ability