THUMB is a playable word

thumb Scrabble® Dictionary

verb
thumbed, thumbing, thumbs
to leaf through with the thumb (the short, thick digit of the human hand)

15 Playable Words can be made from "THUMB"

   2-Letter Words (5 found)

   3-Letter Words (8 found)

   4-Letter Words (1 found)

   5-Letter Words (1 found)