SURMISER is a playable word

surmiser Scrabble® Dictionary

noun
pl. surmisers
one that surmises
116 Playable Words can be made from "SURMISER"
   2-Letter Words (11 found)
   3-Letter Words (27 found)
   6-Letter Words (10 found)
   7-Letter Words (4 found)
   8-Letter Words (1 found)