stun
Gaming and fantasy term for a temporary disabling effect, such as being stunned, paralyzed, or unable to act. Used as a noun, often in compounds like スタン攻撃 or スタン状態.
The boss took heavy damage while stunned.
This skill inflicts a stun effect on the enemy.
This skill has the effect of stunning enemies.
I got hit by lightning and entered a stunned state.
I took the boss's stun attack and couldn't move.
I used an item to recover from the stun.
stun gun
Borrowed from English 'stun', used primarily in gaming and fantasy contexts.