also frowsy, 1680s, possibly related to dialectal frowsty (q.v.).
Entries linking to frowzy
frowsty adj.
"having an unpleasant smell," 1865, of unknown origin; perhaps related to Old French frouste "ruinous, decayed," or to Old English þroh "rancid;" both of which also are of uncertain origin. Also compare frowzy.