SKEWBACK is a playable word

skewback Scrabble® Dictionary

noun
pl. skewbacks
a sloping surface against which the end of an arch rests
84 Playable Words can be made from "SKEWBACK"
   2-Letter Words (10 found)
   3-Letter Words (26 found)
   5-Letter Words (13 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)