adj.
Pronunciation: ' m ə s-t ē
Function: adjective
Inflected Form: must · i · er ; -est
Etymology: 4 must
Date: 1530
1 a : impaired by damp or mildew : MOLDY b : tasting of mold c : smelling of damp and decay : FUSTY
2 a : TRITE , STALE < musty prose> b (1) : ANTIQUATED < musty customs> (2) : SUPERANNUATED
synonyms see MALODOROUS
– must · i · ly \ ' m ə s-t ə -l ē \ adverb
– must · i · ness \ -t ē -n ə s \ noun