SIZEISM is a playable word

sizeism Scrabble® Dictionary

noun
pl. sizeisms
prejudice or discrimination against people because of their size
27 Playable Words can be made from "SIZEISM"
   2-Letter Words (6 found)
   3-Letter Words (7 found)
   4-Letter Words (8 found)
   5-Letter Words (5 found)
   7-Letter Words (1 found)