knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• leave it out
• leave much to be desired
• leaven
• leavened
• leavening
• leavenings
• leave no effects
• leave no stone unturned
• leavenous
• leavens
• leave of absence
• leave off
• leave one cold
• leave one's mark
• leave one's options open
• leave out
• leave out in the cold
• leave out of account
• leaver
• leavers
• leaves
• leaves of absence
• leave someone in the lurch
• leave someone to her own devices
• leave someone to his own devices