| Word | Definitions | Synonyms |
|---|---|---|
| cataclysm | (noun) an event resulting in great loss and misfortune | Synonyms: calamity, catastrophe, disaster, tragedy |
| (noun) a sudden violent change in the earth's surface | Synonyms: catastrophe | |
| clypeus | (noun) a shield-like plate on the front of an insect's head | - |
| clyster | (noun) an injection of a liquid through the anus to stimulate evacuation; sometimes used for diagnostic purposes | Synonyms: enema |