HORSE is a playable word

horse Scrabble® Dictionary

verb
horsed, horsing, horses
to provide with a horse (a large, hoofed mammal)
48 Playable Words can be made from "HORSE"
   2-Letter Words (12 found)
   3-Letter Words (16 found)
   4-Letter Words (13 found)
   5-Letter Words (7 found)