GRIND is a playable word

grind Scrabble® Dictionary

verb
ground or grinded, grinding, grinds
to wear, smooth, or sharpen by friction
18 Playable Words can be made from "GRIND"
   2-Letter Words (3 found)
   3-Letter Words (7 found)
   4-Letter Words (7 found)
   5-Letter Words (1 found)