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con·cussed | \ kən-ˈkəst 
\
\Definition of concussed
: suffering the effects of a hard blow to the head : affected with a concussion Despite the recent effort to improve recognition of a concussed player and remove him from the game, the diagnosis might be missed after a fight.— Michael J. Stuart et al. "And that complete cow Pansy Parkinson," said Hermione viciously. "How she got to be a prefect when she's thicker than a concussed troll …"— J. K. Rowling Did it seem like the action of a dazed, concussed man, no longer master of his thoughts, to select those things, pack a bag, conceal the hospital clothes, and walk out of here?— Brian Moore
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Time Traveler for concussed
The first known use of concussed was in 1879
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