I. ˈstən transitive verb
( stunned ; stun·ning )
Etymology: Middle English stonen, stunen, from Anglo-French estoner — more at astonish
Date: 14th century
1. : to make senseless, groggy, or dizzy by or as if by a blow : daze
2. : to shock with noise
3. : to overcome especially with paralyzing astonishment or disbelief
II. noun
Date: 1727
: the effect of something that stuns : shock