HASHTAG is a playable word

hashtag Scrabble® Dictionary

noun
pl. hashtags
a word or phrase preceded by the symbol # that categorizes the accompanying text
53 Playable Words can be made from "HASHTAG"
   2-Letter Words (8 found)
   3-Letter Words (20 found)
   4-Letter Words (19 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)