GATEAU is a playable word

gateau Scrabble® Dictionary

noun
pl. gateaus or gateaux
a fancy cake
33 Playable Words can be made from "GATEAU"
   2-Letter Words (8 found)
   3-Letter Words (18 found)
   4-Letter Words (4 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)