FEVER is a playable word

fever Scrabble® Dictionary

verb
fevered, fevering, fevers
to affect with fever (abnormal elevation of the body temperature)
18 Playable Words can be made from "FEVER"
   2-Letter Words (4 found)
   3-Letter Words (8 found)
   4-Letter Words (5 found)
   5-Letter Words (1 found)