| crown sheet | |
| crying cat face | |
| crying face | |
| crystal ball | |
| crystallisation | |
| crystallise | |
| cubic centimetre | |
| cubic metre | |
| culver | |
| cuppa | |
| curly loop | |
| currency exchange | |
| curry favour | |
| curry favour with | |
| curry rice | |
| custard | |
| customer | |
| customisation | |
| customise | |
| cut and cover | |
| cut and fill technique | |
| cyclone | |
| cyder | |
| cylinder cover | |
| dagger | |
| damage from military manoeuvres | |
| dance | |
| dango | |
| dark grey | |
| dashing | |
| database normalisation | |
| data centre | |
| dead center | |
| dead-man’s handle | |
| decalitre | |
| decarbonise | |
| decarburise | |
| decentralisation | |
| deciduous tree | |
| decigramme | |
| decilitre | |
| decimetre | |
| decriminalise | |
| defaecate | |
| defaecation | |
| defence | |
| defence counsel | |
| defence lawyer | |
| defenceless | |
| defences | |
| British English |