- Conjectural
- Conjecture
- Conjunction of planets
- Conjure
- Conjurer
- Conk
- Connect time
- Conspiracy
- Constabulary
- Consternate
- Consternation
- Constituency
- Construct
- Constructed in front of mansions
- Consulate
- Continuation
- Continuity
- Coolness
- Contractual
- Convalescence
- Convalescent
- Convenience
- Convention
- Conventional
- Conversion
- Convertible
- Convex
- Conveyance
- Cool wind
- Cooler
- Cooper
- Cop out
- Coparcenor
- Coper
- Copier
- Copious
- Copiousness
- Copper plate
- Copper sulphate
- Copper vessel
- Copra
- Corporatization
- Correction
- Correction deed
- Correctly
- Correctness
- Correlative
- Correspondent
- Corresponding
- Corrigendum
- Corroborative
- Corroboratory
- Corrode
- Cost-benefit
- Costs
- Costume jewellery
- Cosy
- Cottager
- Cotton up
- Coup de grace
- Couple
- Courses
- Court of law
- Courtesies
- Courtliness
- Courtly
- Cowl
- Cowpea pods
- Cows
- Coxswain
- Coy
- Crab
- Crabber
- Crack a joke
- Crack brained
- Cracked
- Cracking sound
- Craftiness
- Creeper
- Creepers
- Cremation
- Creme
- Creole
- Crepe
- Crept
- Crest
- Cretin
- Crevasse
- Crevice
- Criminal
- Criminalist
- Cross-dressing
- Cross-hands
- Cross-ply
- Crossness
- Crosswise
- Crotch
- Croton plant
- Cruise missile
- Cruiser