RADICAL is a playable word

radical Scrabble® Dictionary

noun
pl. radicals
a group of atoms that acts as a unit in chemical compounds
67 Playable Words can be made from "RADICAL"
   2-Letter Words (9 found)
   3-Letter Words (17 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)