DETERRER is a playable word

deterrer Scrabble® Dictionary

noun
pl. deterrers
one that deters
27 Playable Words can be made from "DETERRER"
   2-Letter Words (6 found)
   3-Letter Words (8 found)
   4-Letter Words (9 found)
   5-Letter Words (3 found)
   8-Letter Words (1 found)