daze
n.n. a state of confusion or being unable to think clearly, often after a shock or a blow to the head.
n. a state of mental confusion or disorientation, typically resulting from a physical trauma or a sudden shock.
He was in a daze after the accident.
The witness was in a state of daze for several minutes following the explosion, unable to provide a coherent account of the events.
The sudden shift in the mine's structural integrity left the workers in a collective daze, their instincts taking over as they scrambled for the nearest exit.
From Middle English, back-formation from dazed. Compare Old Norse dasask (“to become weary”), with reflexive suffix -sk, Swedish dasa (“lie idly”), and Icelandic dasask (“to make weary with cold”). Also compare Proto-Germanic *dusāną, to slumber. Alternatively from Middle Dutch dasen (“act silly”).