knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• generation
• generational
• generation gap
• generation gaps
• generationism
• generationisms
• generations
• Generation X
• Generation Xer
• generative
• generative grammar
• generative grammars
• generator
• generators
• generatrices
• generatrix
• generic
• generical
• generically
• genericisation
• genericise
• genericised
• genericises
• genericising
• genericization