1. lack - verb
· be without; "This soup lacks salt"; "There is something missing in my jewelry box!"
Synonym(s): miss
2. lacking - adjective
· inadequate in amount or degree; "a deficient education"; "deficient in common sense"; "lacking in stamina"; "tested and found wanting"
Synonym(s): deficient, wanting
3. lacking - adjective
· nonexistent; "the thumb is absent"; "her appetite was lacking"
Synonym(s): absent, missing, wanting
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