From Longman Dictionary of Contemporary Englishstunstun /stʌn/ verb (stunned, stunning) [transitive not in progressive] 1 SHOCKto surprise or upset someone so much that they do not react immediately → stagger Redfern stunned the crowd with a last-minute goal.2 UNCONSCIOUSto make someone unconscious for a short time The impact of the ball had stunned her. → stunned, stunning→ See Verb table
Examples from the Corpus
stun• They like to use an elephant gun to stun a flea.• Sasha was too stunned by what had happened to say a word.• It had been one of those suggestions that stuns everyone with its rightness.• His words stunned her, and she stared at him in disbelief.• Suminski in love: the idea stuns her.• Occasionally, it is the amount that stuns me.• The neural pathways in nature continue to stun scientists with how non-optimized they are.• Chester stormed back to stun Swansea with two goals in five minutes.• They had only intended to stun the guard, to give them time to escape.• Gamekeepers use special darts to stun the rhinos.• Howard was stunned when Garrett rejected the offer.Origin stun (1300-1400) Old French estoner; → ASTONISH 