- Copper coin
- Copper-coloured
- Coppice
- Corn circle
- Corn factor
- Corn-cob
- Cornice
- Coromandal coast
- Coronary arteries
- 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
- Council-chamber
- Counsel
- Counselled
- Count noses
- Countenance
- Counter
- Counter band goods
- Counter charge
- Counter check
- Counter march
- Counter-attraction
- County court
- County town
- Coupe
- Coupe de etat
- Couplate
- Coupon
- Courageously
- Course
- Courser
- Court fool
- Courteous
- Courtesy
- Courtship
- Courtyard
- Cove
- Cowling
- Cowpie
- Cowrie
- Cows urine
- Cowslip
- Cox
- Coz
- Cozen
- Cracker
- Crackle
- Cracksman
- Creaking
- Cream
- Crease
- Creating
- Creator
- Creatures
- Credential
- Creditworthy
- Credulity
- Credulous
- Creel
- 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