- Cassette
- Cast a lurid light on
- Cast a shadow
- Cast down
- Casuistical
- Casus belli
- Cat and mouse game
- Cat call
- Cat fish
- Cat has nine lives
- Cataclysm
- Catafalque
- Catalysis
- Catamaran
- Catch
- Catch a tartar
- Cattamaran
- Cattle lifting
- Cattle plague
- Cattle rearing
- Cattle show
- Cattle-shed
- Cauda draconis
- Caudex
- Caulk
- Causationism
- Cause and effect
- Cause celebre
- Causeless
- Causerie
- Cayenne pepper
- Cd
- Cd drive
- Cdac
- Ceaseless effort
- Ceaseless flow
- Ceaselessly
- Celebrator
- Celerity
- Celery
- Celestial personage
- Cell membrane
- Cellar
- Centrifugal
- Centripetal force
- Centuple
- Century
- Cephalic
- Cerebral palsy
- Ceremony
- Certain
- Certainity
- Chalk out
- Challenging
- Chamber music
- Characteristic
- Chamberlain
- Chamois
- Chamomile
- Champerty
- Champing at the belt
- Chance
- Chancellor
- Chandelier
- Chapel
- Chaperon
- Chaplain
- Chaps
- Chattiness
- Characterized
- Chargé d'affaires
- Chargeable
- Charger
- Chariot
- Charioteer
- Chariots
- Charisma
- Charismatic
- Charitha
- Chauvinism
- Che guvera
- Cheapen
- Cheapskate
- Cheating
- Check into
- Checked
- Cheeks
- Cheer up
- Cherry brandy
- Cherry pie
- Cherub
- Chest
- Chesty
- Chevy
- Chiasmus
- Chic
- Chicken
- Chicken out
- Chicory
- Chief