FINNIER is a playable word

finny Scrabble® Dictionary

adjective
finnier, finniest
having or characterized by fins
36 Playable Words can be made from "FINNIER"
   2-Letter Words (8 found)
   3-Letter Words (12 found)
   4-Letter Words (9 found)
   5-Letter Words (6 found)
   7-Letter Words (1 found)