- conjurer
- catch on
- caesar
- caesarean operation
- cafe
- cafune
- cage
- callous
- calamari
- calamities
- calamitous
- calculate
- call by
- call centre
- call down on
- call on
- calves
- camaraderie
- cameo
- continue
- curio
- condensate
- condescend
- condescending
- conditional
- confession
- confessional
- confetti
- confidant, confidante
- confidential
- confidentially
- conky
- consent
- consent letter
- conservancy
- conservation biology
- conserve
- consternation
- construct
- contagion
- container
- contemnor
- convert
- convertibility
- conviction
- convince
- coral island
- cordite
- coreldraw
- coriander leaves
- cork
- cotton plant
- cotton up
- cougar
- could
- coulter
- coumarone
- council
- council board
- counsellor
- counter check
- coup de theatre
- courage
- courser
- cow-dung
- cowhide
- cowpie
- cows urine
- crammer
- crane
- cranium
- creational
- credibility
- credibly
- crime passionnel
- crime sheet
- criminalist
- criminologist
- criminology
- cripple
- crippled
- crises
- crisp
- cross-grained
- cross-ply
- crossover
- crosswise throw
- crossword
- crotchet
- croupier
- crowd out
- crown princess
- crucified
- cruel woman
- cruft
- cruiser
- crumps
- cry blue murder
- cry off
- cry one's heart or eyes out