PIPIEST is a playable word

pipy Scrabble® Dictionary

adjective
pipier, pipiest
shrill
55 Playable Words can be made from "PIPIEST"
   2-Letter Words (9 found)
   3-Letter Words (19 found)
   4-Letter Words (15 found)
   5-Letter Words (7 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)