- Churn-staff
- Churn-stick
- Chute
- Chutney
- 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
- Clip-art
- Clip-on
- Clobber
- Clogged
- Cloistered
- Close associate
- Close cropped
- Close friend
- Close investigation
- Close over
- Clouded
- Cloudless
- Clout
- Clouted
- Clover
- Cloverleaf
- Clumsiness
- Clung
- Clunky
- Cluster
- Clustered
- Clutches
- Coarse paper
- Coarticulation
- Coastguard
- Coat
- Coating
- Coax
- Cobalt
- Cocercion
- Cochineal
- Cohabit
- Codes of morality
- Codicil
- Coerce
- Coexist
- Coffee bean
- Coffee shop
- Cognitive behavioural therapy
- Cold snap
- Cold sweat
- Cold wave
- Cole
- Colicky
- Collaboration
- Collaborators
- Collar
- Collateral damage
- Collected
- Combat
- Combatant
- Combatants
- Combe
- Combination
- Combination of syllables
- Combine
- Combustible
- Come between
- Come down with
- Come for
- Come home to roost