- Counter-claim
- Coup
- Coup de foudre
- Coupling
- Courage
- Courageous
- Courier
- Court
- Court-martial
- Courtesan
- Courtier
- Cousin
- Covenant
- Cover
- Cows udder
- Crabby
- Crack
- Crackerjack
- Cracking the point of fingers
- Crackling
- Cracks
- Craft
- Craze
- Crazed
- Creamery
- Created
- Creation
- Creative
- Creative writer
- Creature neither male or female
- Credibly
- Creditable
- Creditor
- Credo
- Creek
- Criminality
- Criminologist
- Crinkum-crankum
- Crippling
- Crisis
- Crispy
- Criterion
- Critical
- Critical spirit
- Critical stage in small-pox
- Croak
- Crocus
- 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
- Curate
- Curb
- Curcuma amada
- Cure
- Curfew
- Curiosity
- Curled hair
- Curliness
- Curling
- Curmurring
- Currant
- Cuscus grass
- Cuscus plant