Cat-

We’ve also been using words like cataleptic and catatonic in my very remarkable and mesmerizing class.
Cataleptic—stiff and rigid, unaware.
Catatonic—paralyzed, having immobile limbs, suffering from some type of schizophrenic disorder.

That's weird, cataleptic is from a Greek word meaning "a seizing," but
catatonic is from catatonia, which came from New Latin, through German.