- Chorus
- Chosen
- Chow
- Chrysalis
- Chthonic
- Chuckle
- Chugger
- Chum up
- Chunnam
- Churn-staff
- Churn-stick
- Chute
- Chutney
- Circling
- Circumcise
- Circumfluence
- Circumnavigation
- Circumpolar
- Circumscribe
- Circumstance
- Circumvent
- Circumvention
- Circus
- Cisc
- Cissuspedafa
- Cistern
- Citadel
- Citation
- Claret
- Clarified butter
- Clarinet
- Clarinettist
- Class
- Classicist
- Classics
- Classification
- Clay modelling
- Clean
- Clean out
- Cleaner
- Cleaning
- Cleansed
- Clear away
- Clear data
- Clear out
- Clear the place
- Clear the way
- Clear up
- Clientele
- Cliffhanging
- Climactic
- Climate
- Climate change
- Climatology
- Climbing hoop
- Clime
- Climp up
- Clinging steadfast
- Clinging to
- Clingy
- Clinical
- 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