- Cordon off
- Corduroy
- Coriander
- Coriander leaves
- Coriander powder
- Corporation
- Corporeal
- Corpus
- Correlate
- Correlated
- Correlation
- Correspond with
- Correspondency
- Corroboration
- Corrodent
- Cost-cutting
- Costermonger
- Costly
- Costume
- Costume designer
- Costumer
- Costus
- Cot
- Coterminous
- Cottage
- Cottage industry
- Cotter
- Cotton planks
- Cotyledon
- Couch
- Couchant
- Could
- Coulter
- Councillor
- Counsellor
- Counselors
- Count
- Count on
- Count out
- Counter mine
- Counter move
- Counter plot
- Counter revolution
- Counter-argument
- Coup de theatre
- Coupled with
- Coupler
- Couplet
- Court of justice
- Courteously
- Couscous
- Covalent
- Covariance
- Cowry
- Cows milk
- Cowshed
- Coxcomb
- Coyly
- Coyote
- Crab-apple
- Crabbed
- Crack up
- Crackdown
- Cracking
- Cracking of finger joints
- Crackpot
- Cradle
- Craftmanship
- Craftsmanship
- Crafty plan
- Craggy
- Crammer
- Cranberry
- Crank
- Cranky
- Crappy
- Crass
- Craving for food
- Creeping
- Cremate
- Crematory
- Crenellated
- Creosote
- Crescent
- Cress
- Cretinism
- Crew
- Cribbage
- Crick
- Crooked
- Crop circle
- Croquis
- Crore
- Cross breed
- Cross eye
- Cross the rubicon
- Cross-border
- Cross-check
- Crouton
- Crowing