- Crossness
- Crosswise
- Crotch
- Croton plant
- Crypt
- Crystalize
- Crystallisation
- Crystallization
- Cs
- Ct
- Cubbish
- Cube root
- Cubic
- Cubic contents
- Cubic foot
- Cuboid
- Curative
- Curbable
- Curcumin
- Curdy
- Curer
- Curing
- Curing off
- Curio
- Curiously
- Curled
- Curler
- Curlew
- Curly
- Curmudgeon
- Currency note
- Custard
- Custom
- Custom-built
- Cutover
- Customer
- Customs house
- Cut a wide swath
- Cut and paste
- Cut loose
- Callosity
- Cellulite
- Coarsely
- Cymbalist
- Caesura
- Cafe
- Camellia
- Ception
- Circumambulation
- Coamings
- Comminute
- Conjunctivits
- Cornflour
- Coterminus
- Ccd
- Cabby
- Cachexia
- Cacophonous
- Cacophony
- Cacti
- Cactus
- Cad
- Caecilian
- Caesar
- Cahoots
- Cajole
- Cal
- Calabash
- Calamities
- Calamities in rapid sequence
- Calcify
- Calcite
- Calcium carbonate
- Calculated
- Calcutta
- Caldron
- Calendar year
- Caliban
- Calibrate
- Calk
- Call at
- Call attention to
- Call back
- Call by
- Call centre
- Call in question
- Call names
- Call to action
- Call to bar
- Call upon
- Callousness
- Calls distance
- Calluses
- Calm
- Calote
- Calumet
- Calumny
- Calves
- Cam
- Cambric