- Castle
- Castor
- Castor cake
- Castor sugar
- Castrate
- Castrated bull
- Castrol-oil plant
- Casual
- Casually
- Catechism
- Categorize
- Category
- Catenary
- Cater to
- Caterer
- Caterwaul
- Catnap
- Causing heat
- Causing joy and fear
- Caustic potash
- Caution money
- Cautionary
- Cautiously
- Cavalcade
- Cavalryman
- Cave dweller
- Cave painting
- Caveat
- Cavort
- Cavum
- Celluloid
- Celt
- Celtic
- Cenacle
- Cenotaph
- Centaurus
- Centenary
- Centennial
- Center
- Centipede
- Central
- Centralisation of powers
- Certification
- Certifier
- Certitude
- Cesarean
- Cesspit
- Cetacean
- Cetology
- Chafed
- Chain
- Chainless
- Chaise lounge
- Change clothes
- Change position
- Chanted
- Chatty
- Charlatan
- Charon
- Charvaka doctrine
- Charybdis
- Chasmogamic
- Chat
- Chateau
- Chauffer
- Cheering
- Cheerio
- Cheetah
- Chemical
- Chemical inputs
- Chemical warfare
- Chemicals
- Chemise
- Chemistry
- Chequer
- Cherishing
- Chermatic economics
- Cherry
- Chief mahout
- Chief of the family
- Chief person
- Chief secretary
- Chief whip
- Chignon
- Chihuahua
- Childbirth
- Childless
- Chiropractor
- Chiseler
- Chiselling
- Chitty
- Chloride
- Choice
- Choke off
- Christian era
- Christian name
- Christmas eve
- Christmas tree
- Chromoplast
- Chronic disease