Non-heterosexual

Non-heterosexual is a sexual orientation or sexual identity that is not heterosexual. The term helps define the "concept of what is the norm and how a particular group is different from that norm".Non-heterosexual is used in feminist and gender studies fields as well as general academic literature to help differentiate between sexual identities chosen, prescribed and simply assumed, with varying understanding of implications of those sexual identities. The term is similar to queer, though less politically charged and more clinical; queer generally refers to being non-normative and non-heterosexual. Some view the term as being contentious and pejorative as it "labels people against the perceived norm of heterosexuality, thus reinforcing heteronormativity". Still others note non-heterosexual is the only term useful to maintaining coherence in research and suggest it "highlights a shortcoming in our language around sexual identity"; for instance, its use can enable bisexual erasure.

Many gay, lesbian and bisexual people were born into cultures and religions that stigmatized, repressed or negatively judged any sexuality that differed from a heterosexual identity and orientation. Additionally the majority of heterosexuals still view non-heterosexual acts as taboo and non-conventional sexual desires are generally hidden entirely or masked in various ways.Non-heterosexual is more fully inclusive of people who not only identify as other than heterosexual but also as other than gay, lesbian and bisexual. Some common examples include same gender loving, men who have sex with men (MSM), women who have sex with women (WSW), bi-curious and questioning.Non-heterosexual is considered a better general term than homosexual, lesbian and gay, LGBT or queer for being more neutral and without the baggage or gender discrimination that comes with many of the alternatives. For instance, until 1973, the American Psychological Association listed homosexual as a mental illness, and it still has negative connotations.

...
Wikipedia