- Cicer arictinum
- Cider
- Cinchona
- Cinematograph
- Cinerama
- Cineraria
- Cinnamon
- Cinnamon powder
- Cir
- Circe
- Citified
- Citizen
- Citrus
- City-gate
- Civet cat
- Civet-musk
- Civic
- Civics
- Civil behaviour
- Civil defence
- Civil liberty
- Civil servant
- Claret
- Clarified butter
- Clarinet
- Clarinettist
- Class
- Classicist
- Classics
- Classification
- Clear-cut
- Clearing
- Clearing station
- Cleat
- Cleavable
- Cleavage
- Cleaving to
- Cleft
- Clemency
- Clepsydra
- Clergy
- Clergyman
- Cleric
- Clerodenron syphananthus
- Clever
- Close rank
- Close round
- Close to
- Close-fitting
- Closed place
- Closefisted
- Closely built
- Closet genius
- Closing as flowers
- Clot
- Cloth purse
- Clothline
- Cncoction
- Co-axial
- Coarse
- Co-factor
- Co-operator
- Co-sister
- Coachman
- Coagulant
- Coal bed
- Coal tar
- Cock fighting
- Cock-eyed
- Cockade
- Cockle shell
- Cockney
- Cockpit
- Coconut inflorescence
- Coconut milk
- Coconut tree
- Cocoonery
- Coda
- Coif
- Coiled
- Coir-mats
- Cold chisel
- Cold cream
- Cold feet
- Cold frame
- Collective farm
- Collectivist
- Colleen
- Collieries
- Colliery
- Collocate
- Collocation
- Colloquial
- Colloquialism
- Combat
- Combatant
- Combatants
- Combe
- Combination
- Combination of syllables