- Coordinator
- Copacetic
- Copasetic
- Copper
- Copper coin
- Copper-coloured
- Coppice
- Corps
- Corpse
- Corpulence
- Corpulency
- Corpulent
- Corpulent person
- Correspond
- Correspondence
- Corridor
- Corroborant
- Corrodible
- Corrody
- Cost of living
- Croaky
- Cosumed
- Cot with coir matting
- Cote
- Cotton
- Cotton cake
- Cotton on to
- Cotton wool
- Couch potato
- Cough
- Counter-temps
- Counterbalance
- Countess
- Country-greens
- Cover up
- Cover-cloth bed
- Covered
- Covering letter
- Covert room
- Covertly
- Covet
- Covetable
- Covey
- Cow-elephant
- Cow-herd's
- Cow-pat
- Cowed
- Cower
- Cowhouse
- Crafty
- Crane
- Cranefly
- Cranium
- Crash landing
- Crassness
- Crawl
- Creep
- Creeper cynanchum acidum
- Crepitate
- Cricket
- Cried
- Crier
- Crime passionnel
- Croissant
- Crony capitalism
- Cronyism
- Crook
- Crookedly
- Crop up
- Cross breeds
- Cross examination
- Cross examine
- Cross pollination
- Cross road
- Cross-beam
- Cross-bred
- Crow
- Crow about
- Crow pheasant
- Crowbar
- Crowd
- Crowded
- Crown
- Crows
- Crows bath
- Crozier
- Crt
- Crucial
- Crude sugar
- Crudely
- Crudeness
- Cruel person
- Cruel woman
- Cry over spilt milk
- Crying over spilt milk
- Cryogenic
- Cryptic
- Crypto graphed
- Crystal clear
- Crystal-gazing