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Ambisexual is a term with many different meanings.

In the 20th century, "ambisexual" usually meant either intersex, androgynous, unisex/gender-neutral, or an mspec orientation, depending on context. The word's first recorded usage was in 1938.[1]

Erwin J. Haeberle's 1978 text The Sex Atlas used "ambisexual" as a more precise term than bisexual.[2]

Sexologists Masters and Johnson defined an ambisexual as someone who has sexual interest in partners regardless of sex, with no preference, and who "has never evidenced interest in a continuing relationship", as well as their sexual activity history being closest to 3 on the Kinsey Scale.[3]

In the early 21st century, some people used "ambisexual" to specifically mean an orientation similar to what is presently called heteroflexible: "usually a tendency toward opposite-sex sexual attraction coexisting alongside occasional sexual attractions and encounters with the same sex."[4]

A 2019 book titled Ambisexuality defined "ambisexual" as a man who is sexually attracted to trans women.[5] This definition can be considered transmisic since trans women are the same gender as cis women.


  1. Goldie, Terry (2014). The Man Who Invented Gender: Engaging the Ideas of John Money. UBC Press. p. 138.
  2. Neill, James (2011). The Origins and Role of Same-Sex Relations in Human Societies. McFarland. p. 9.
  3. Masters, William H; Johnson, Virginia E (1979). Homosexuality in perspective. p. 145-146.
  4. Firestein, Beth A., ed. (2007). Becoming Visible: Counseling Bisexuals Across the Lifespan. Columbia University Press. p. 96.
  5. Watson, James (2019). Ambisexuality. Austin Macauley Publishers Limited.