- Conversely
- Convert
- Convey
- Conveyable, conveyance
- Conveyed
- Conveyor
- Convict
- Coolant
- Coolie
- Cooperate
- Coordinate
- Coot
- Cope
- Cope with
- Copilot
- Coping
- Copiously
- Corporally
- Corporate
- Corps de-ballet
- Corps diplomatique
- Corpuscle
- Corral
- Correct
- Corrected
- Correctitude
- Corrective
- Corroborate
- Corroding
- Council
- Council board
- Council estate
- Council of war
- Counselor
- Count for
- Count in
- Countable
- Counter-allegation
- Counter-attack
- Counter-claim
- Coup
- Coup de foudre
- Coupling
- Courage
- Courageous
- Courier
- Court
- Court-martial
- Courtesan
- Courtier
- Cousin
- Covenant
- Cover
- Crag
- Crake
- Cram full
- Crammed
- Cramped
- Crams
- Crate
- Crater
- Cravat
- Craven
- Crawler
- Crawling
- Crayfish
- Crayon
- Creepy
- Cremation ground
- Crematorium
- Cremulator
- Crepuscular
- Crescendo
- Crest-jewel
- Crestfallen
- Crib
- Cricketer
- Crime
- Crime sheet
- Criminal code
- Criminal jurisprudence
- Cross-eyed
- Cross-fertilize
- Crumple
- Cross-question
- Crossbenches
- Crossbones
- Crossfire
- Crossing bounds
- Crossly
- Crossroads
- Crossway
- Crosswind
- Crosswise throw
- Crossword
- Crotchety
- Crouched
- Cruelty
- Crummy
- Crumpling dry leaves