- Childishness
- Childline
- Children
- Chirrup
- Chit
- Chithrini
- Chitty foreman
- Chivalry
- Chivvy
- Chivy
- Chloroform
- chock-a-block
- Choke
- Choke damp
- Choker
- Christendom
- Christhood
- Christian science
- Christianise
- Christianity
- Christians
- Christmas rose
- Christo
- Chromaticity
- Chromatics
- Chromosome
- Chronic
- Chronograph
- Chronologic
- Chutzpah
- Chyme
- Ciao
- Cics
- Cilantro
- Cinch
- Cine
- Cine-camera
- Cinema scope
- Cinematography
- Cinephile
- Cinnabar
- Circle
- Circled
- Circuit
- Circulation
- Circumference
- Circumrotation
- Clash of interests
- Class conscious
- Class-war
- Classic
- Classical
- Classical antiquity
- Classified
- Clatter
- Clause
- Claustrophobic
- Clavicle
- Clearance sale
- Clearness
- Cleft lip
- Clement
- Cleromancy
- Clever feat
- Clink
- Clip
- Clippers
- Clipping
- Clitoria
- Cloakroom
- Clockwork
- Clod
- Clod hopper
- Cloister
- Clop
- Close around
- Close down
- Close with
- Close-knit
- Closeted
- Closing
- Closing the eyes
- Closure
- Clothes
- Clothesline
- Clothing
- Cloud nine
- Cmos
- Co-education
- Co-heir
- Co-opt
- Co-respondent
- Co-star
- Co-worker
- Coach
- Coach load
- Coagulate
- Coalgate
- Cockalarum
- Cockscomb