WHOSESO is a playable word

whoseso Scrabble® Dictionary

pronoun
possessive of whoso
68 Playable Words can be made from "WHOSESO"
   2-Letter Words (13 found)
   3-Letter Words (22 found)
   5-Letter Words (9 found)
   6-Letter Words (1 found)
   7-Letter Words (2 found)