- corrugator supercilli
- crushed leather
- communization
- change the subject
- cook goose
- crocked
- commercialized
- condensation trail
- contretemps
- conventionalisation
- conventionalised
- chang kuo_lao
- chromosomal mutation
- cash in
- change course
- change (small coins)
- change_of_pace
- cowcatcher
- cerebral vomiting
- cerebro_cerebellar degeneration
- confer with
- consign
- commend
- cross_refer
- cited
- copy out
- coonhound
- caterpillar tread
- cartroad
- contumacious
- changed (for the worse)
- changeable (for the worse)
- contradictoriness
- counter principle
- contrarious
- contrary to fact
- contras
- certificate of incorporation
- crack of doom
- convertible security
- cross_linkage
- covalent bond
- chains
- constraining
- chemical breakdown
- chain up
- coherency
- clangoring
- crash helmet
- consideration of the pros and cons (of a matter)