- Chop
- Chop off
- Choral, chorale
- Chord
- Chorister
- Chortens
- Choultry
- Ciborium
- Cicatrice
- Cigar
- Cigarette
- Cilia
- Cinder
- Cinnamomum osmophloeum
- Cinnamon leaf
- Cinnamon tree
- Cipher
- Circa
- Circadian rhythm
- Citric acid
- Citronella oil
- City state
- Ciu
- Civet
- Civil case
- Civil engineer
- Civil rights
- Civil service
- Clarion call
- Clarity
- Clash
- Clashing
- Class distinction
- Classicism
- Classroom
- Claustrophobia
- Claviger
- Claw
- Clearly
- Clears
- Cleaver
- Cleft footed
- Clench
- Clenching the fist
- Cleopatra ramases akhnaton tuthankhaman
- Clepsyddra
- Clevage
- Clever person
- Close ranks
- Close shave
- Close-mouthed
- Closed
- Closed fist
- Closely
- Closely related
- Closeness
- Closet
- Closure motion
- Clothe
- Cloud
- Cml
- Co-belligerent
- Co-dining
- Co-owner
- Co-traveller
- Coadjutor
- Coagulated
- Coagulation
- Coal
- Coal gas
- Coalescence
- Coalface
- Coalite
- Cock-a-hoop
- Cock-crest
- Cockatoo
- Cockerel
- Cockernony
- Cockle
- Cocky
- Cocoa
- Coconut leaves
- Coconut oil
- Coconut palm
- Coconut toddy
- Cod
- Coddiwomple
- Coherence
- Coherent
- Coherently
- Cohesion
- Coiffure
- Coinage
- Coincide
- Coincidence
- Coincidental
- Coir fibre
- Coital
- Coitus
- Colander