| A | B |
| courier | a messenger |
| covert | secret; hidden; concealed |
| crony | a close friend or companion |
| crux | main point; the heart of the matter |
| cryptic | having an ambiguous or hidden meaning |
| cupidity | excessive greed, especially for money |
| curb | to control or check |
| cursory | rapid and superficial; performed with haste and scant attention to detail |
| defunct | dead or inactive; having ceased to exist |
| demise | death; the end |