MATZOS is a playable word

matzo Scrabble® Dictionary

noun
pl. matzos or matzot or matzoth
an unleavened bread
51 Playable Words can be made from "MATZOS"
   2-Letter Words (11 found)
   3-Letter Words (19 found)
   4-Letter Words (16 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)