FROWSTS is a playable word

frowst Scrabble® Dictionary

verb
frowsted, frowsting, frowsts
to lounge in a stuffy room
60 Playable Words can be made from "FROWSTS"
   2-Letter Words (7 found)
   3-Letter Words (16 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)