INERTIA is a playable word

inertia Scrabble® Dictionary

noun
pl. inertias or inertiae
the tendency of a body to resist acceleration
(adjective) inertial
97 Playable Words can be made from "INERTIA"
   2-Letter Words (16 found)
   3-Letter Words (32 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)