| conniving | Given to or involved in conspiring to do something immoral, illegal, or harmful | |
| conglomerate | A company that is made up of a number of different, often unrelated businesses | |
| confound | Cause surprise or confusion in (someone), especially by acting against their expectations | |
| conflate | To combine or blend together to form one substance or mass | |
| conflagration | A large and destructive fire that causes a lot of damage | |
| confiscate | To take or seize someone's property with authority | |
| conferred | To grant or bestow (a title, degree, benefit, or right) upon someone | |
| condign | appropriate to the punishment or (occasionally) reward in relation to the wrongdoing or merit of the person receiving it | |
| concupiscence | Strong sexual desire; lust | |
| concord | A state of agreement or harmony between people or groups | |