To agree to do something or give permission. In the context of sex, a person is giving full consent/is consenting when they freely and actively agree to do something sexual with someone else; however, the person still has the right to change their mind at any point. A person is NOT consenting if they do not actively agree, have been forced or pressured in some way or are in a state where they are incapable of full consent (such as when asleep, under the influence of drugs or alcohol, or below the age of consent).