catatonic (adj) – unresponsive, unmoving, or appearing to be in a daze or stupor
BREAKDOWN: CATA- (down) + TON- (tone) + -IC (pertaining to)
— catatonia is a state of muscular rigidity and mental stupor
This word is built on the root TON-, which means tension, tone, sound, or thunder.
Common TON- words include astonish, detonate, monotonous, thunder, tone, and tune.