by-by-, bye- /baɪ/ prefix 
less important: 
a by-product (=something made in addition to the main product) a by-election (=one held between regular elections)
less important: a by-product (=something made in addition to the main product) a by-election (=one held between regular elections)- clonk
- Clooney, George
- clop
- close
- close-cropped
- closed
- closed captioned
- closed circuit television
- closed-door
- closed economy
- closedown
- closed season
- closed shop
- Close Encounters of the Third Kind
- close-fitting
- close-knit
- closely
- close-mouthed
- closeness
- closeout
- close-run
- close season
- close-set
- closet
- close-up