FLINT is a playable word

flint Scrabble® Dictionary

verb
flinted, flinting, flints
to provide with flint (a spark-producing rock)
18 Playable Words can be made from "FLINT"
   2-Letter Words (5 found)
   3-Letter Words (9 found)
   4-Letter Words (3 found)
   5-Letter Words (1 found)