NIPPIEST is a playable word

nippy Scrabble® Dictionary

adjective
nippier, nippiest
sharp or biting
119 Playable Words can be made from "NIPPIEST"
   2-Letter Words (12 found)
   3-Letter Words (30 found)
   6-Letter Words (10 found)
   7-Letter Words (5 found)
   8-Letter Words (1 found)