- Coconut
- Cocopeat
- Coddle
- Code
- Codex
- Codger
- Coed
- Coefficient
- Coessential
- Coffee break
- Coffee plant
- Coffer
- Cogitate
- Cogitation
- Cogitative
- Cognate
- Cognisance
- Cognoscente
- Cohabitation
- Cohesively
- Cohort
- Coil
- Coin
- Coin money
- Coiner
- Col
- Cold cuts
- Cold storage
- Cold war
- Cold-blooded
- Cold-hearted
- Coleslaw
- Coliform
- Coliseum
- Colitis
- Collaboratively
- Collage
- Collapse
- Collapsible
- Collar beam
- Collectedly
- Collective noun
- College
- Collegian
- Colliding
- Collision
- Collision course
- Collusiveness
- Collyrium
- Colocasia
- Colon
- Colonial
- Colonialism
- Colonization
- Colonize
- Colophon
- Colophony
- Colorectal
- Colour bar
- Colour printing
- Colouring
- Colt
- Comb
- Combative
- Combing
- Come
- Come across
- Come and go
- Come at
- Come into ones own
- Come out
- Come through
- Come to grief
- Come to his senses
- Commingle
- Come to the surface
- Come together
- Come under
- Comely
- Comemorated
- Comet
- Comfort station
- Comical
- Comilona
- Coming to blows
- Comma bacillus
- Command-ed
- Commander-in-chief
- Commandments
- Commando
- Commandos
- Comme il faut
- Commemorate
- Commemoration
- Commence
- Commendable
- Commensurable
- Commensurable ness
- Commentary
- Commentate, commentator