- Controlled passions
- Controller
- Contumacious
- Contused
- Contusion
- Conurbation
- Conviction
- Convincing
- Convivial
- Convoluted
- Convolution
- Convuised
- Convulsion
- Cook the books or accounts
- Cooking
- Cooking rice
- Cooks
- Cool
- Cool fish
- Cool ones heels
- Corporally
- Corporate
- Corps de-ballet
- Corps diplomatique
- Corpuscle
- Corral
- Correct
- Corrected
- Correctitude
- Corrective
- Corroborate
- Corroding
- Cost-effective
- Costive
- Coterie
- Cotton cloth
- Cotton plant
- Cougar
- Coughing
- Could have
- Coulomb
- Council
- Council board
- Council estate
- Council of war
- Counselor
- Count for
- Count in
- Countable
- Counter-allegation
- Counter-attack
- 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
- Cross-eyed
- Cross-fertilize