deficiency

nouns

the state of needing something that is absent or unavailable
"there is a serious lack of insight into the problem"; "water is the critical deficiency in desert regions"; "for want of a nail the shoe was lost"
deficiency, lack, want
is derived from
deficient
lack of an adequate quantity or number
"the inadequacy of unemployment benefits"
deficiency, inadequacy, insufficiency
is derived from
deficient
is derived from
deficient