is an initialism that stands for "lesbian, gay, bisexual, and transgender". In use since the 1990s, the initialism, as well as some of its common variants, functions as an umbrella term for marginalized sexualities and gender identities.
The term LGBT is an adaptation of the initialism , which began to replace the term gay (or gay and lesbian), in reference to the broader LGBT community beginning in the mid-to-late 1980s. When not inclusive of transgender people, the shorter term LGB is still used instead of LGBT.
It may refer to anyone who is non-heterosexual or non-cisgender, instead of exclusively to people who are lesbian, gay, bisexual, or transgender. To recognize this inclusion, a popular variant, , adds the letter Q for those who identify as queer or are questioning their sexual or gender identity. The initialisms LGBT or GLBT are not agreed to by everyone that they are supposed to include.
The first widely used term, homosexual, now a term used primarily in scientific contexts, has at times carried negative connotations in the United States. Gay became a popular term in the 1970s.
As lesbians forged more public identities, the phrase gay and lesbian became more common. A dispute as to whether the primary focus of their political aims should be feminism or gay rights led to the dissolution of some lesbian organizations, including Daughters of Bilitis, which was founded by Del Martin and Phyllis Lyon, but disbanded in 1970 following disputes over which goal should take precedence. As equality was a priority for lesbian feminists, disparity of roles between men and women or butch and femme were viewed as patriarchal. Lesbian feminists eschewed gender role play that had been pervasive in bars as well as the perceived chauvinism of gay men; many lesbian feminists refused to work with gay men or take up their causes.
Lesbians who held the essentialist view that they had been born homosexual and used the descriptor lesbian to define sexual attraction often considered the separatist opinions of lesbian-feminists to be detrimental to the cause of gay rights.