TWINIER is a playable word

twiny Scrabble® Dictionary

adjective
twinier, twiniest
resembling twine (a strong string)
61 Playable Words can be made from "TWINIER"
   2-Letter Words (11 found)
   3-Letter Words (16 found)
   5-Letter Words (9 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)