| complexité | perplexity |
| Complexité algorithmique | Computational complexity theory |
| Complexité de Kolmogorov | Kolmogorov complexity |
| Complexité irréductible | Irreducible complexity |
| Complexo Desportivo Municipal de Barcelos | Estádio Cidade de Barcelos |
| complication | entanglement |
| Complications de la grossesse | Complications of pregnancy |
| complice | accessory |
| Complice de | Tributary |
| complicité | complicity |
| complicité tacite | conspiracy of silence |
| complies | compline |
| compliment | congratulation |
| complimenter | congratulate |
| complimenteur | flatterer |
| complimenteuse | flatterer |
| compliments | congratulations |
| compliquer | perplex |
| compliqué | difficult |
| complot | scheme |
| Complot de famille | Family Plot |
| Complot de Rye-House | Rye House Plot |
| Complot papiste | Popish Plot |
| comploter | scheme |
| comploteur | conspirator |
| complètement | plain |
| complètement affolé | scared to death |
| Complètement gelé | Frozen solid |
| complètement immobile | stock-still |
| complètement insensé | past all reason |
