SYPHER is a playable word

sypher Scrabble® Dictionary

verb
syphered, syphering, syphers
to overlap so as to make an even surface, as beveled plank edges
52 Playable Words can be made from "SYPHER"
   2-Letter Words (8 found)
   3-Letter Words (21 found)
   4-Letter Words (15 found)
   5-Letter Words (5 found)
   6-Letter Words (3 found)