- Cadet corps
- Cadillac
- Cadre
- Cae
- Caesarean operation
- Caffeine
- Cafune
- Cagey
- Cain
- Calaboose
- Calamari
- Calcareous
- Calcification
- Calcium
- Calefaction
- Calendar
- Calendar month
- Caliber
- Calibre
- Calico
- Caliph
- Caliphate
- Calisthenics
- Call
- Call a spade a spade
- Call girl
- Call of prayer
- Call off
- Call person names
- Call to order
- Call up
- Callon
- Callus
- Calm down
- Calm man
- Calmly
- Calmness
- Caloric
- Calotropis
- Camber
- Camels
- Cameo
- Camera-man
- Camisole
- Camouflage
- Camp chair
- Camp-shed
- Camper
- Campesinos
- Campment
- Canaille
- Canarese
- Cancer
- Cancroids
- Candidly
- Candidness
- Candor
- Candour
- Canine
- Cannon fodder
- Canonical
- Canonical hours
- Canorous
- Cant make head or tail
- Cantankerous
- Canticle
- Canto
- Canton
- Canvasser
- Canyon
- Cap
- Cap in hand
- Caparison
- Capitalistic
- Capricon
- Captain
- Capturing elephant
- Car
- Caraway
- Carbide
- Carbohydrate
- Carbolic
- Carbon
- Carbon dioxide
- Carbonic
- Carboy
- Carburettor
- Cpm
- Card game
- Card table
- Cardigan
- Cardiovascular
- Care
- Care for
- Carefulness
- Careless
- Carelessly
- Carelessness
- Caressing word
- Carnage