Meaning

verb make senseless or dizzy by or as if by a blow

verb hit something or somebody as if with a sandbag

verb overcome as with astonishment or disbelief

originInherited from Middle English stonen, stone (“to astonish, stun, numb”, also stoneyen), probably either directly or indirectly from Anglo-Norman estoner (“to stun, astonish”), from Late Latin *stunāre, from Frankish *stunōn (“to thunder, crash”) or perhaps from an unattested Latin *extonāre (“to thunder out, make a thunderous sound”), from tonāre ("to thunder"; compare Latin attonāre). An…

Etymology from Wiktionary, CC BY-SA 3.0