KO or k.o.

1. Kick-off
2. Knockout
3. Knock out

To knock out

A knockout

• countermoves
• countermure
• countermured
• countermures
• countermuring
• counteroffensive
• counteroffer
• counteroffers
• counter-opening
• counterpace
• counterpaces
• counter-paled
• counterpane
• counterpanes
• counter-parole
• counter-paroles
• counterpart
• counterparts
• counter-passant
• counterpeise
• counterpeised
• counterpeises
• counterpeising
• counterplea
• counterplead