FLAREUP is a playable word

flareup Scrabble® Dictionary

noun
pl. flareups
a sudden outbreak
93 Playable Words can be made from "FLAREUP"
   2-Letter Words (13 found)
   3-Letter Words (29 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)