- Cross-border
- Cross-check
- Crouton
- Crowing
- Crowning
- Crupper
- Crude castor oil
- Crudites
- Crudity
- Cruel
- Cubs
- Cry wolf
- Crystalline
- Crystallized
- Crystallography
- Ctrl
- Cubbyhole
- Cube
- Cubist
- Cubit
- Cumber
- Cunning
- Cunning person
- Cunningly
- Cunt
- Cup
- Cup final
- Cup-cake
- Cupboard
- Cupful
- Cupids arrow
- Curved line
- Cuscus
- Cushy
- Cusp
- Cuspidor
- Cussed
- Custody
- Customs
- Cut a figure
- Cut across
- Cut and dry
- Cut motion
- Cyclops
- Cyclotron
- Cylindrical stone
- Cymbal
- Cyperus grass
- Cyperus rotendra grass
- Cytode
- Cental
- Circumambulate
- Circumbulation
- Compacency
- Cablegram
- Cabotage
- Cache
- Cackle
- Cacography
- Cadastre
- Cadaveric
- Cadence
- Cadjan
- Caduceus
- Cafeteria
- Cage
- Calorimeter
- Calory
- Came in to view
- Cameleer
- Canned
- Cannibal
- Cannot
- Cannot wait
- Canoeist
- Canola
- Canon
- Canonize
- Canophilia
- Canopy
- Cant
- Capable
- Capable man
- Capable of
- Capacitor
- Capacity building
- Caparisoned
- Capillary
- Capital outlay
- Capital punishment
- Capitalism
- Capitol
- Carapace
- Carat
- Caraway seeds
- Carbine
- Carbon copy
- Carbon-dio-oxide
- Carbonate
- Carbuncle