- Callosity
- Cellulite
- Coarsely
- Cymbalist
- Conjunctivits
- Cornflour
- Coterminus
- Ccd
- Cabby
- Cachexia
- Cacophonous
- Cacophony
- Cacti
- Cactus
- Cad
- Caecilian
- Caesar
- Cahoots
- 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
- Campaigner
- Campanology
- Camwhore
- Can of worms
- Canalize
- Canard
- Cancerous
- Candicamera
- Candidates
- Candle
- Candy
- Cane chair
- Cantillate
- Cantonment
- Canvas
- Cap-a-pie
- Capacity crowd
- Caper
- Capital
- Capital expenditure
- Capital idea
- Caravanserai
- Carbolic acid
- Carbonize
- Carburetor
- Carcass
- Carcinoma
- Card
- Cardamom seed
- Cardinal virtues
- Cardiogram
- Carol
- Carpel
- Carpenter ant
- Carpet bag
- Carpus
- Carrier
- Carrion crow
- Carry a torch for
- Casein
- Cash crop
- Cash in
- Cashew
- Casing
- Casket
- Catalepsy
- Cast a long shadow
- Cast away
- Cast iron
- Cat bird
- Cat hood
- Catacomb
- Catalogue
- Catalonia
- Catarrh
- Catastrophe
- Catawampus
- Causing to
- Cautery
- Cavalry
- Cave temple
- Caveat emptor
- Cavernous
- Caviar
- Cellulose
- Cemetery
- Cense
- Censer
- Censured
- Centenario
- Centerpiece