EXCIMER is a playable word

excimer Scrabble® Dictionary

noun
pl. excimers
a dimer that exists in an excited state
41 Playable Words can be made from "EXCIMER"
   2-Letter Words (7 found)
   3-Letter Words (14 found)
   4-Letter Words (11 found)
   5-Letter Words (8 found)
   7-Letter Words (1 found)