- constrict
- constructible
- controversialist
- conunction
- convalesce
- convenant
- convene
- convenience
- convent
- convoy
- cook
- cookery book
- cooking
- cope
- copper coin
- copper sulphate
- copulate
- corker
- corn
- corn circle
- corn pone
- cornice
- corrosive
- corrugated
- cosily
- cosmetic
- cosmogony
- cottage industry
- couch
- counseller
- count on, count upon
- countdown
- counter march
- countless
- country-craft
- country-greens
- countryman, countrywoman
- county
- coup de foudre
- covetous
- cow pox
- cow-dung beetle
- cow-herd-woman
- cow-herd's
- cowdung cake
- cowl
- cradle
- craftsman, craftswoman
- crampon
- cranefly
- creamery
- crease
- create
- creativity
- creator
- creature
- creature neither male or female
- creditor
- creek
- criminal code
- crimped
- cringe
- crinkum-crankum
- crisis
- crop
- crores
- cross-current
- cross-examine
- crossbones
- crossing
- crossing bounds
- crucify
- crude
- crude castor oil
- crudites
- cruelty
- cry someone down, cry something down
- crying over spilt milk
- cryptology
- cube
- cubic
- cuckoo clock
- cuirass
- cul-de-sac
- culminate
- culpable
- cult
- cultivar
- cultivated
- curmurring
- current events
- curry-leaf tree
- cursive
- cursoriness
- curt
- curtail step
- curtain lecture
- cuscus
- cuscus plant
- cut someone off, cut something off