TABOO is a playable word

taboo Scrabble® Dictionary

verb
tabooed, tabooing, taboos
to exclude from use, approach, or mention
20 Playable Words can be made from "TABOO"
   2-Letter Words (6 found)
   3-Letter Words (10 found)
   4-Letter Words (3 found)
   5-Letter Words (1 found)