SMASHUP is a playable word

smashup Scrabble® Dictionary

noun
pl. smashups
a collision of motor vehicles
88 Playable Words can be made from "SMASHUP"
   2-Letter Words (13 found)
   3-Letter Words (28 found)
   5-Letter Words (12 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)