a person who usually does things differently from the majority of people, not for the sake of being different and special, but because they prefer to do so.
As a nonconformist, Alex doesn't care if a band is bashed my many people, he still listens to them and admits that because he likes their music.
Short for "nonconsensual" in fanfiction, regular fiction, or just in general referring to various kinds of relationship scenarios where one or both of the participants is forced into sex. Generally associated with rape fantasy and highly controversial.