REFINER is a playable word

refiner Scrabble® Dictionary

noun
pl. refiners
one that refines
50 Playable Words can be made from "REFINER"
   2-Letter Words (8 found)
   3-Letter Words (16 found)
   4-Letter Words (12 found)
   5-Letter Words (9 found)
   6-Letter Words (3 found)
   7-Letter Words (2 found)