1. Knocked unconscious by a heavy blow
   "The boxer lay stunned on the canvas";
   - knocked out, kayoed, KO'd, out
    
2. In a state of mental numbness especially as resulting from shock
   "lay semiconscious, stunned by the blow";
   - dazed, stupefied, stupid
    
3. Filled with the emotional impact of overwhelming surprise or shock
   "stood in stunned silence"; "stunned scientists found not one but at least three viruses";
   - amazed, astonied [archaic], astonished, astounded

1. Make senseless or dizzy by or as if by a blow
   "stun fish";
   - stupefy
    
2. Hit something or somebody as if with a sandbag
   "The unexpected news stunned the investors";
   - sandbag
    
3. Overcome as with astonishment or disbelief
   "The news stunned her";
   - bedaze, daze

See also: confused, fuddled, surprised, unconscious

Type of: desensitise [Brit], desensitize, hit, immobilise [Brit], immobilize

Encyclopedia: Stunned