concussed

concussed

1. simple past and past participle of concuss

   The blow concussed him.

concussed (comparative more concussed, superlative most concussed)

1. Knocked out; temporarily confused or unconscious due to a blow to the head.
   • 2021 March 10, Drachinifel, 24:41 from the start, in Guadalcanal Campaign - The Big Night Battle: Night 1 (IJN 3(?) : 2 USN)‎, archived from the original on 7 November 2022:

     But, for whatever combination of reasons - and, to be fair, he'd been blasted in the face by shrapnel, was probably badly concussed, and, indeed, would actually remember nothing from the battle after he'd been hit when he was later debriefed - aside from two destroyers left behind to help Hiei, the rest of the Japanese forces withdrew north just before 0300 in the morning.