Synonyms for lack

Noun

1. lack, deficiency, want, need, demand

usage: 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"

Verb

1. miss, lack

usage: be without; "This soup lacks salt"; "There is something missing in my jewellery box!"