Stupor
Etymology
From Latin stupor, "insensibility, numbness," from stupere, "to be stunned or amazed" (also the root of "stupefy" and "stupid"). The Latin verb spanned both being dazed and being struck with wonder. English kept mainly the dazed, senseless meaning — a mind knocked out of gear.
noun · /STOO-por/
A state of near-unconsciousness or dazed insensibility in which one can barely respond.
What it names
The condition of being so stunned, drugged, drunk, or overwhelmed that awareness and reaction are severely blunted, short of full unconsciousness.
Example
He sat in a stupor after the news, staring at the wall and not hearing a word anyone said.
Related idea
Torpor is chronic sluggishness and low energy; stupor is a more acute, deeper daze in which basic awareness itself is clouded, often brought on suddenly.