- Christendom
- Christhood
- Christian science
- Christianise
- Christianity
- Christians
- Christmas rose
- Christo
- Chromaticity
- Chromatics
- Chromosome
- Chronic
- Chronograph
- Chronologic
- Chrysanthemum
- Chrysanthus
- Chubby
- Chukle
- Chump
- Chunk
- Churlishness
- Churn
- Churned
- Churning rod
- Chutzpah
- Chyme
- Ciao
- Cics
- Cilantro
- Cinch
- Cine
- Cine-camera
- Cinema scope
- Cinematography
- Cinephile
- Cinnabar
- Circle
- Circled
- Circuit
- Circulation
- Circumference
- Circumrotation
- Cited
- Citizen of the world
- Citizenship
- Citrine
- Citronella
- City chief
- City of indra
- City-dweller
- Civic centre
- Civil disobedience
- Civil war
- Civilised
- Claimed
- Clairaudience
- Clam up
- Clammy
- Clamor
- Clamour
- Clamp down on
- Clap of thunder
- Clash of interests
- Class conscious
- Class-war
- Classic
- Classical
- Classical antiquity
- Classified
- Clatter
- Clause
- Claustrophobic
- Clavicle
- Clay
- Clean down
- Clean from
- Clean hands
- Clean-handed
- Clean-shaven
- Cleanliness
- Cleanness
- Clearance sale
- Clearness
- Cleft lip
- Clement
- Cleromancy
- Clever feat
- Cleverness
- Cliff
- Climbers
- Climbing plant
- Climbing stem
- Clinging
- Clinging steadfastedly on
- Clinical psychology
- Clink
- Clip
- Clippers
- Clipping
- Clitoria