- Costive
- Coterie
- Cotton cloth
- Cotton plant
- Cougar
- Coughing
- Could have
- Coulomb
- Counter-revolutionary
- Counterblast
- Counterclockwise
- Counterintuitive
- Countermand
- Counterpane
- Counterpart
- Countless
- Country dance
- Country folk
- Country-boat
- County
- Covering
- Covert place
- Covertness
- Covetous
- Cow pox
- Cowardice
- Cowboy
- Cowhand
- Cowherdess
- 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
- Crone
- Crony
- Croquette
- Cross
- Cross voting
- Crowd out
- Crowded market
- Crumpled
- Crown prince
- Crown wheel
- Crowns
- Crucified
- Crucifix
- Crucify
- Cruel persons
- Crying
- Crypto
- Crypto communist
- Crystal
- Crystallize
- Crystals
- Csi
- Cub
- Cubic root
- Cubicle
- Cultural
- Culture
- Cultured
- Cultured person
- Cumin
- Cumin seed
- Cumminseed
- Cumulative
- Cuneiform
- Cuniform writing
- Cunning fellow
- Cunningness
- Cupboard love
- Cutlet
- Cuppa
- Currently
- Curricle
- Curriculum