- Cental
- Circumambulate
- Circumbulation
- Compacency
- Caitiff
- Caladium
- Calamitous
- Calcinations
- Calculation
- Caledenian
- Calender
- Calf
- Calf love
- Calibration
- Calorimeter
- Calory
- Came in to view
- Cameleer
- Canned
- Cannibal
- Cannot
- Cannot wait
- Canoeist
- Canola
- Canon
- Canonize
- Canophilia
- Canopy
- Cant
- Capriccio
- Caprice
- Capsicum
- Capsize
- Capstan
- Captcha
- Captious
- Caput draconis
- Capybara
- Carabineer
- Carafe
- Carambola
- Caramel
- Careerist
- Caret
- Careya arborea
- Cargo
- Caricaturist
- Caries
- Caring
- Carry off
- Carry or take can
- Carry out
- Cart-pullers
- Carte blanche
- Carton
- Caruncle
- Carvat
- Carve out
- Caryatid
- Case
- Cast off
- Cast pearls before swine
- Cast-away skin of snake
- Casteism
- Caster of metals
- Castigate
- Castillian
- Catalist
- Castor-oil-plant
- Casty away
- Casuality
- Casualty
- Casualty ward
- Casuistry
- Cat
- Cat and dog life
- Cat out of the bag
- Cataclism
- Catalyst
- Catalytic
- Cataplexy
- Cataract
- Catch a chill
- Catch a few rays
- Catch able
- Catch at a straw
- Causing pain
- Causing to shine
- Caustic
- Causticity
- Cauterisation
- Cauterise
- Caution
- Cautious
- Cavalier
- Cavalry officer
- Cave
- Cave in
- Caveman
- Cavil