KO or k.o.

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

To knock out

A knockout

• free-selecting
• free-selection
• free-selector
• free-selectors
• free-selects
• freesheet
• freesheets
• free-shot
• free-shots
• freesia
• freesias
• free skating
• free-soil
• free-soiler
• free space
• free-space
• free speech
• free spirit
• free spirits
• free-spoken
• free-spokenness
• freest
• free-standing
• Free States
• freestone