| concomitant | A phenomenon that naturally accompanies or follows something | |
| concoct | To prepare or make by combining various ingredients, especially in cookery | |
| concession | A thing that is granted, especially in response to demands | |
| compunction | A feeling of guilt or moral scruple that prevents or follows the doing of something bad | |
| composure | The state or feeling of being calm and in control of oneself | |
| complicit | Involved with others in an illegal activity or wrongdoing | |
| commiserate | To feel or express sympathy or compassion | |
| commensurate | Corresponding in size, extent, amount, or degree; proportionate | |
| collusion | Secret or illegal cooperation or conspiracy, especially in order to cheat or deceive others | |
| cohort | A group of people banded together or treated as a group | |