CUBICS is a playable word

cubic Scrabble® Dictionary

noun
pl. cubics
a mathematical equation or expression
14 Playable Words can be made from "CUBICS"
   2-Letter Words (4 found)
   3-Letter Words (7 found)
   4-Letter Words (1 found)
   5-Letter Words (1 found)
   6-Letter Words (1 found)