- Castrol-oil plant
- Casual
- Casually
- Casuarina tree
- Casuist
- Catabolism
- Catalog
- Cataloguing
- Catalyse
- Catapult
- Catastrophic
- Catatonic
- Catch cold
- Catechism
- Categorize
- Category
- Catenary
- Cater to
- Caterer
- Caterwaul
- Catnap
- Cattish, cat like
- Cattle
- Cattle breeding
- Caucasian
- Caught between two stools
- Cauliflower
- Causatively
- Cause of future good
- Caused
- Causelessness
- Causes
- Causing heat
- Causing joy and fear
- Caustic potash
- Caution money
- Cautionary
- Cautiously
- Cavalcade
- Cavalryman
- Cave dweller
- Cave painting
- Caveat
- Cavort
- Cavum
- Cawing
- Cdrom
- Ceased
- Ceasefire
- Ceaseless
- Cedrine
- Celebration
- Celebrity
- Celestial
- Celluloid
- Celt
- Celtic
- Cenacle
- Cenotaph
- Centaurus
- Centenary
- Centennial
- Center
- Centipede
- Central
- Centralisation of powers
- Centrifugal machine
- Centriole
- Centurion
- Ceramics
- Ceramography
- Cerbera odollam fruit
- Cerebrum
- Ceremonious
- Certainty
- Certification
- Certifier
- Certitude
- Cesarean
- Cesspit
- Cetacean
- Cetology
- Chafed
- Chain
- Chainless
- Chaise lounge
- Chakras
- Chalazion
- Challan
- Challenge
- Chamber of commerce
- Chamber of horrors
- Champagne
- Chancel
- Change clothes
- Change position
- Chanted
- Chapter
- Chapter of accidents
- Character