knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• frown on
• frowns
• frown upon
• frows
• frowsier
• frowsiest
• frowsiness
• ivy-tods
• IW
• I-way
• IWC
• iwi
• I will be along
• iwis
• I wouldn't be seen dead
• I wouldn't know
• IWW
• ixia
• ixias
• ixodiases
• ixodiasis
• ixtle
• ixtles
• Iynx
• Iyyar