CARDIAC is a playable word

cardiac Scrabble® Dictionary

noun
pl. cardiacs
a person with a heart disorder
35 Playable Words can be made from "CARDIAC"
   2-Letter Words (6 found)
   3-Letter Words (9 found)
   4-Letter Words (11 found)
   5-Letter Words (5 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)