Transmasculine

Transmasculine describes a person assigned female at birth whose gender identity or expression is predominantly masculine. Like its counterpart on the other assignment it names a direction rather than an endpoint, which is why trans men and masculine Non-binary people both sit inside it. The clipped form is transmasc.

What the record holds for Transmasculine

First documented

c.2000

The DC Area Transmasculine Society was established in 2000 and does not claim to have coined the word, so the term is older than the organisation. The earliest print citation on file is from 2011.

Coined by

Not on record. The word is in use with no traceable author, which is the ordinary case for vocabulary that grew inside a community rather than being announced.

How common

Major community term

27.7 per cent of gender-diverse respondents

Nobody has dated the coinage, and the record is unusual in that the word was in institutional use before it was in print.

Where transmasculine came from

The earliest transmasculine-specific organisation on record is the DC Area Transmasculine Society, established in 2000. It does not claim to have coined the word, which puts the term earlier than the body named after it, and Healthline, having traced that much, concludes only that the word has been in use for at least two decades. Morphologically there is nothing to explain: Wiktionary gives it as trans- plus masculine, and the same construction has been borrowed straight into French as transmasculin, Polish as transmęski and Spanish as transmasculino.

The print citations begin later, and they arrive in a particular order: the word is used in passing, then defined, then taken for granted, all inside seven years. Wiktionary's earliest is Anurag Saxena's Biomechanics in Physical Education in 2011, on bodybuilding as a way to enhance a masculine presentation, where the term is left unexplained. Tommaso M. Milani supplies the first full definition on file in Language and Masculinities in 2014, along with the phrase transmasculine identity spectrum: an umbrella term for people assigned to a female gender role at birth who come to identify as men, or with some other masculine identity, rather than seeing themselves as women. By 2017 Michael R. Kauth and Jillian C. Shipherd pair it with transfeminine in Adult Transgender Care and go on to name what the pair misses, acknowledging clients who are agender and identify with neither. In 2018 it is unglossed in a third-edition clinical textbook, Richard K. Adler, Sandy Hirsch and Jack Pickering's guide to voice and communication therapy.

Who counts as transmasculine

Healthline lists trans men, non-binary people assigned female at birth who identify with masculinity, demiboys, and genderfluid people who identify with masculinity for all, most or some of the time. Merriam-Webster gives the general form: a person whose gender identity is partially or fully masculine and differs from the sex the person was identified as having at birth. Katy Steinmetz, in the example sentence the dictionary carries, describes a transmasculine person as somebody born female who identifies with a lot of aspects of masculinity but does not feel he or she is a man.

The assignment is the boundary. Someone assigned male at birth is not transmasculine whatever their presentation, and the word for that assignment is Transfeminine. Nothing else in the definition is a requirement: Healthline is explicit that being transmasculine dictates no particular relationship to gender roles, no particular clothing, grooming or hairstyle, and no medical step of any kind.

How transmasculine differs from trans man

A trans man is a man and the word closes the question. Transmasculine leaves it open on purpose, which is why it is often the term people use while they are still working out whether man is the right word at all, and Healthline makes exactly that argument for it.

Somebody can be transmasculine and non-binary at the same time. Not every non-binary person is transmasculine, because non-binary people may identify with masculinity, femininity, both or neither, and only the first group is described here. The other frequent confusion runs sideways: Butch describes a presentation, is used by plenty of women who are not transmasculine at all, and carries no claim about birth assignment.

What a surgical cohort reported

The Transmasculine Surgical Expectations Study at the Center for Gender Surgery at Boston Children's Hospital enrolled its first 167 patients between April 2018 and August 2020: all assigned female at birth, aged 15 to 35, all seeking gender-affirming surgery, and two thirds of them under 21. Elizabeth R. Boskey and Oren Ganor published the baseline analysis in Transgender Health in 2022. Eighty-seven per cent of the cohort held a binary identity as male or transgender male; 146 participants were binary trans men and 21 were non-binary transmasculine people.

The two groups answered differently, and the differences were the finding.

MeasureBinary trans menNon-binary transmasculine participants
Number enrolled14621
Aged fifteen to eighteen37 per cent19 per cent
Recorded as white80 per cent81 per cent
Identified as heterosexual31 per centnone

Even the binary participants were far less heterosexual than the one national probability sample the authors compared against, 31 per cent against 93 per cent. Non-binary participants were also likelier to report attraction to, and a history with, other non-binary people. Both groups reported higher attraction to men and women who were not explicitly described as transgender, which the authors note may be an artefact of the wording as easily as anything else, since a respondent answering about attraction to men may be counting trans men inside that word. The paper's conclusion is about vocabulary: transmasculine sexual identities are variable, complex, and not well described by standard sexual orientation categories. It notes a move among some researchers towards androphilic and gynephilic, which describe the genders a person is attracted to without requiring any statement about the person's own.

The limits are stated in the paper itself. The cohort is young, largely white, largely binary, insured, and drawn entirely from people pursuing surgery at one centre, so it is not a picture of transmasculine people in general and does not claim to be. Neither is the other figure in circulation: the 27.7 per cent of gender-diverse respondents who chose transmasculine in the 2025 Gender Census describes the people who filled in a self-selected community survey, exactly as the cohort describes the people who walked into one clinic.

Why the word covers a group

Breadth is the practical argument for it. A term that reaches trans men and masculine non-binary people at once is usable by writers whose sentence is about a population, and the clinical literature reaches for it constantly on those grounds. The 2019 study by Lauren Dinour quoted in Merriam-Webster's example sentences is about lactation language and transmasculine parents, a group no narrower word would have named without excluding part of it. The Australian National University's gender-inclusive handbook cites that study for the argument that heterosexual and woman-focused language misgenders and isolates those parents.

The same breadth is what makes the term contested at the edges. A word that covers a man and a non-binary person equally well is a word that says less about each of them, and some trans men prefer the narrower term for that reason.

How the wider record dates the vocabulary

The alignment words are recent, and the umbrella they hang under is not much older. Magnus Hirschfeld coined Transvestit in 1910, borrowing a nineteenth-century French theatrical word, and seelischer Transsexualismus followed in 1923. David Oliver Cauldwell brought transsexual into English in 1949 and Harry Benjamin popularised it in 1966. John F. Oliven used transgenderism in his 1965 reference work Sexual Hygiene and Pathology, arguing that transsexualism was misleading because sexuality was not the major factor. Virginia Prince printed transgenderal in the December 1969 issue of Transvestia, the magazine she founded for cross-dressers.

Transgender itself only became an umbrella in the 1990s: a transgender community in that sense had formed by 1984, Richard Ekins established a Trans-Gender Archive at the University of Ulster in 1985, the International Conference on Transgender Law and Employment Policy defined the term expansively in 1992, and Susan Stryker's 1994 definition stretched it to every identity or practice that crosses socially constructed sex and gender boundaries. Wikipedia records that the word still has no universally accepted definition, researchers included.

Against that, a word first attested in print in 2011 is very new, and its institutional use from 2000 is the older evidence for it.

Told apart

Transmasculine vs Trans man and Transfeminine

Common questions

Questions about Transmasculine

Who coined the word transmasculine?
The coiner is not known. The earliest transmasculine-specific organisation on record, the DC Area Transmasculine Society, was established in 2000 and does not claim the coinage, which puts the word earlier than the body named after it. The earliest print citation traced for this entry is from 2011.
Can a non-binary person be transmasculine?
Yes. Transmasculine reaches anyone assigned female at birth whose identity or expression leans masculine, which includes trans men, demiboys, masculine non-binary people and genderfluid people whose gender is masculine some of the time. The Boston cohort study that used the term enrolled binary and non-binary participants together and reported them separately, which is the usual arrangement in clinical work.
Is transmasculine the same as being a trans man?
No. Every trans man is transmasculine, but transmasculine is wider and does not require a man at the end of it. That is why it is often the word people use while they are still deciding, and why the clinical literature uses it when a sentence has to cover a group.
Can someone assigned male at birth be transmasculine?
No. The assignment is the boundary the word carries. A person assigned male at birth whose identity leans feminine is transfeminine, and the two terms are not interchangeable in either direction.
What did the Boston surgical cohort find?
That standard sexual orientation categories fit transmasculine people badly. Among the first 167 patients enrolled between April 2018 and August 2020, binary participants were likelier to be heterosexual and less likely to be queer, no non-binary participant identified as heterosexual, and even the binary participants were far less heterosexual than the national comparison sample. The paper states its own limits: the cohort was young, largely white, insured and drawn entirely from people seeking surgery.
How old are the print citations for transmasculine?
Wiktionary's earliest is from 2011, in Anurag Saxena's Biomechanics in Physical Education. A full definition follows in Tommaso M. Milani's Language and Masculinities in 2014, and by 2018 the word appears unglossed in clinical textbooks. The institutional record is older: the DC Area Transmasculine Society was established in 2000 and does not claim the coinage.

Added 2026-08-28 · Revised 2026-09-07

The evidence behind the word

How thoroughly Transmasculine has been counted

Not how common the word is. How much of a population anybody has actually measured it across, on a six-step scale where each step is defined by the kind of evidence it takes to reach it, never by a score. The full method.

P2

Major community term

27.7 per cent of gender-diverse respondents

Gender Census 2025

  1. Selected by >=10% of gender-diverse respondents (multi-select) in the Gender Census 2022-2025, or comparable share in Trevor Project nonbinary data.

    Measured against Gender Census 2022/2024/2025; Trevor Project 2021 nonbinary brief

Gender Census and USTS are self-selected community samples (shares of the gender-diverse community, multi-select, checkbox lists change yearly), not population prevalence. Only Williams Institute and Ipsos provide general-population estimates. Culture-specific figures mix census counts, academic studies, and advocacy estimates - each row cites its source.