| cafard | depression; the blues |
| cagamosis | unhappy marriage |
| cairngorm | yellow-brown quartz |
| caisson | vehicle or chest for holding ammunition |
| caitiff | base; cowardly; despicable |
| cakewalk | prancing stage dance with backward tilt |
| calamanco | satin twilled woollen fabric |
| calamist | piper; one who plays using a reed |
| calamus | quill or reed used as a pen |
| calando | slowing with gradually lowering volume |
| calash | light low-wheeled carriage with folding top |
| calathiform | cup-shaped |
| calathus | fruit basket carried on the head |
| calcar | furnace or oven for annealing |
| calcariferous | having or bearing spurs |
| calcariform | spur-shaped |
| calceate | to shoe |