I. verb
to be without something and especially something essential or greatly needed
the building lacks a fire escape
Synonyms: need, require, want
Contrasted words: enjoy, have, hold, own, possess
II. noun
1.
Synonyms: absence , dearth, default, defect, ||miss, privation, want
2.
Synonyms: failure 3, defalcation, deficiency, deficit, inadequacy, insufficience, insufficiency, scantiness, shortage, underage