- Contemptuousness
- Contender
- Cordate
- Conterminous
- Contextualise
- Contexture
- Continence
- Contravention
- Contribute
- Contributor
- Contrite
- Controls
- Controversialist
- Contumely
- Coprology
- Convictions
- Convining
- Coomb
- Convulsive disorders
- Cook up
- Cookbook
- Cornflake
- Cooker
- Cookie
- Cooking vessel
- Cool mind
- Copulation
- Copy
- Copycat
- Copyright
- Copywriter
- Cor
- Coracle
- Corbel
- Cordon
- Corduroys
- Corgi
- Corm
- Corporatization
- Correction
- Correction deed
- Correctly
- Correctness
- Correlative
- Correspondent
- Corresponding
- Corrigendum
- Corroborative
- Corroboratory
- Corrode
- Cost-benefit
- Costs
- Costume jewellery
- Cosy
- Cottager
- Cotton up
- Counter-intelligence
- Counter-tenor
- Counterfeit
- Counterfeit note
- Counterpoise
- Countersign
- Counterstrike
- Countervailing
- Counting
- Countrified
- Country club
- Country-craft
- 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
- Crazy
- Crc
- Creamy
- Create
- Creche
- Credence
- Credit
- Criminology
- Crimp
- Crinkly
- Cripple
- Crispbread
- Critic