- catacombs
- catalog
- catalogue
- cataloguing
- cannery
- communicable diseases
- complication
- catatonic
- catcall
- cannibal
- catch
- catch a chill
- composed of 11 portions
- cannonball
- catch cold
- catch napping
- composer
- cannot be blamed
- catch sight of see
- canonical
- compost
- channelize
- compound terms
- catechismal
- catechize
- categorize
- canopus
- category
- catenary
- cater to
- canopy
- caterer
- comprise
- catharsis
- cathode-rays
- catholic
- computer graphics
- catridge drive
- computerised
- character actor
- cattle plague
- chemical warfare
- caught between two stools
- con
- curmudgeon
- cut and dried
- concatenate
- concurrent processing
- concatenation
- companion
- concealment of truth
- coulter
- clearance
- caused
- concentration
- causing grief
- concerned about
- caution
- cavalier
- cavalry officer
- cave painting
- concert
- caveat
- concerted
- cavern
- caviar
- conchology
- college
- cdc
- ceaseless effort
- cedar tree
- cede
- ceiling
- ceiling fan
- concord
- chrysophilist
- cell a spade a spade
- celsius
- capital idea
- censor
- censorious
- condemnation
- censure
- censured
- condense
- capital outlay
- centilitre
- centipede
- cotton up
- current asset
- central spot
- condiions
- ception
- ceramics
- cicatrize
- coalesce
- condone
- consent
- ceremonial
- context