Masculine women are women whose appearance, behavior, voice, or self-presentation falls outside the narrow range a given culture considers “feminine.” That range is partly shaped by biology and partly by shifting social expectations, which means what registers as masculine in a woman differs across time, place, and community. The science around this topic touches hormones, vocal acoustics, brain imaging, and cultural anthropology, but the social experience of being a masculine woman often matters more to people’s lives than any of those findings in isolation.
What Gets Read as Masculine
When people describe a woman as masculine, they are usually responding to a cluster of cues rather than a single trait. Voice pitch is one of the strongest. Research on how listeners perceive voices shows that recordings manipulated to have a higher pitch are rated as more feminine and younger, while lower-pitched voices trigger the opposite perception, even when the speaker’s face is visible.1PubMed Central. The Effects of Pitch Manipulation on Male Ratings of Female Speakers and Their Voices Acoustic studies have also found that, on average, women’s voices carry more aspiration noise in the upper frequency range, giving them what listeners hear as a “breathier” quality. Women whose voices lack that breathiness tend to be perceived as sounding more masculine.2PubMed. Differences in voice quality between men and women: use of the long-term average spectrum (LTAS)
Beyond voice, body language plays a large role. Taking up space, using broad gestures, standing with a wide stance, and making sustained eye contact are all coded masculine in many cultures. Clothing and grooming choices feed into the perception as well, from short hair to wearing suits or workwear. None of these traits are inherently male; they become masculine only because a culture assigns them that way, and cultures disagree on the details. A woman who reads as unremarkable in one setting can seem strikingly masculine in another.
Prenatal Hormones and Behavior
One of the most studied biological threads is the role of prenatal testosterone. Research on people exposed to unusually high levels of testosterone before birth, such as those with congenital adrenal hyperplasia, shows clear effects on childhood play behavior. Girls in these groups tend to prefer toys and activities typically chosen by boys, and those preferences persist even when parents actively encourage traditionally feminine play. Within the general population, testosterone appears to work along a spectrum: individuals at the higher end of the normal prenatal range tend to behave in more sex-typical ways for males, and those at the lower end in more sex-typical ways for females.3PubMed. Prenatal testosterone and gender-related behaviour
That said, the size of the effect depends on which trait you measure. Prenatal testosterone has a strong influence on toy preferences and rough-and-tumble play but a much weaker and less consistent relationship with things like core gender identity or sexual orientation.4PubMed. Prenatal testosterone and gender-related behaviour So while biology sets some of the groundwork, it does not determine whether a girl grows into a woman others will label masculine. Social reinforcement, personal choice, and cultural context do the rest.
Research on adult hormones adds another layer. A study in which women were assigned roles that involved wielding power found that the experience of exercising authority raised their testosterone levels compared to a control group. The increase happened regardless of whether they wielded power in stereotypically masculine or feminine ways; what mattered was the competitive or dominant nature of the behavior itself.5PubMed Central. Effects of gendered behavior on testosterone in women and men The implication is that the arrow between hormones and gendered behavior points both ways. Testosterone does not just push women toward masculine behavior; behaving in dominant ways can itself raise testosterone.
What Brain Imaging Does and Does Not Show
It would be tidy if brain scans could identify a structural signature of masculinity in women, but the data so far say otherwise. A large neuroimaging study of adolescents found that those who reported feeling less aligned with their assigned sex did not differ from their peers on global brain measures like total volume. A few regional differences in structures like the thalamus and cerebellum appeared in preliminary analysis among those assigned female at birth, but none of the associations survived standard statistical corrections for testing many brain regions at once.6JAMA Network Open. Gender Diversity and Brain Morphology Among Adolescents
A separate study of over 7,000 children between nine and eleven years old confirmed the same general picture. Sex accounted for a small proportion of variance in brain structure, but a continuous score measuring how gender-diverse children felt about themselves was not a significant predictor for any gray or white matter region examined.7PubMed Central. Sex, gender diversity, and brain structure in early adolescence In plain terms, there is no meaningful brain-shape difference between a girl who identifies strongly with conventional femininity and one who does not. Anyone claiming that masculine women have “male brains” is working from a pop-science narrative that the actual neuroimaging literature does not support.
The Tomboy Label and Its Limits
In Anglophone cultures, the most familiar framework for a masculine girl is the “tomboy.” The label carries a surprising amount of social goodwill, at least in childhood. Research asking adults to evaluate the term found that “tomboy” was generally viewed as positive, in sharp contrast to labels like “sissy” applied to boys who cross gender lines.8PubMed. Sissies, Mama’s Boys, and Tomboys: Is Children’s Gender Nonconformity More Acceptable When Nonconforming Traits Are Positive? The asymmetry is stark: a girl in jeans climbing trees earns fond smiles, while a boy in a skirt draws alarm.
The warmth fades with age. The same research found that gender-nonconforming girls were rated with ambivalence rather than outright approval when evaluators considered the girls as individuals rather than labels. They were seen as neither especially likeable nor unlikeable, and neither competent nor incompetent.9PubMed. Sissies, Mama’s Boys, and Tomboys: Is Children’s Gender Nonconformity More Acceptable When Nonconforming Traits Are Positive? That lukewarm middle ground tends to cool further once puberty arrives and the social expectation to “grow out of it” intensifies. A ten-year-old tomboy is charming; a thirty-year-old woman in workboots and a crew cut occupies a more contested space.
Athletic Women Under the Microscope
Few arenas highlight the policing of feminine appearance as sharply as women’s sports. An analysis of how British Sunday newspapers covered female athletes identified four recurring patterns of bodily surveillance: trivializing women’s bodies, treating their physical appearance as secondary to their performance, framing their bodies as commercial products, and evaluating them against standards of conventional femininity.10Journalism. ‘No hint of bulging muscles’: The surveillance of sportswomen’s bodies in British print media The phrase that served as the study’s title, “no hint of bulging muscles,” captures the unspoken rule: a female athlete may be strong, but she must not look strong in a way that disrupts viewers’ expectations of what a woman’s body should be.
This kind of surveillance has real consequences. Athletes who look muscular, who have broad shoulders, who cut their hair short, or who do not perform femininity through makeup and jewelry routinely face speculation about their gender, their hormones, and their sexuality. The scrutiny is not purely cultural gossip; it has, in high-profile cases, led to invasive sex-verification procedures. The underlying anxiety is not really about competitive fairness. It is about the discomfort that arises when a woman’s body visibly demonstrates strength, and strength is supposed to be a male trait.
Sworn Virgins and Other Cultural Frameworks
The idea that women can step into masculine social roles is not new and not exclusively Western. One of the most documented examples comes from the mountainous regions of the Western Balkans, where for centuries certain women known as “sworn virgins” (virgjineshë) took on the social role of men. Travelers and scholars from the late nineteenth century through the mid-twentieth century noted women in these communities who dressed in men’s clothing, carried weapons, smoked, and participated in traditionally male governance structures. In exchange, they took a vow of celibacy and were treated socially as men.11Anuac. Women who become men? The sworn virgins in Albanian traditional culture
The phenomenon was not about personal preference or sexuality in the way contemporary Western culture might frame it. It often arose from practical need. In a rigidly patriarchal society, a household without a male head had no standing. A woman who became a sworn virgin filled that structural gap, gaining the rights to own property, make decisions, and move freely in public. The category of “social man” that these women occupied shows how masculinity can be detached from male biology entirely when a culture decides it needs to be. It is a reminder that masculinity in women has been accommodated by societies under all kinds of ideological frameworks, not just progressive ones.
Butch Identity in Queer Communities
Within lesbian and broader queer communities, masculine presentation has its own rich vocabulary. “Butch” is probably the most recognized term, referring to women and sometimes nonbinary people who present in ways that are deliberately and visibly masculine. Butch identity is not simply a style choice; it often constitutes a deeply felt sense of self that shapes how a person moves through the world.
Research on butch and femme identities in lesbian communities has explored how individuals negotiate these categories in both metaphorical and material spaces. Lesbians are simultaneously shaped by dominant cultural discourses about gender and actively reworking those discourses in the process of living their identities.12Sexualities. Queer Theory, Butch/Femme Identities and Lesbian Space A butch woman at a queer bar may feel her masculinity affirmed and celebrated; the same woman at a family dinner or a corporate office may feel it read as threatening or baffling. The meaning of masculine presentation shifts depending on who is watching and what norms govern the room.
This spatial dimension matters because it means that butch women and other masculine-presenting women rarely experience their identity as a fixed trait the way one might experience height. It is constantly being interpreted, challenged, or validated by the social environment. Understanding that can help explain why the question “what makes a woman masculine?” has no single answer: the label is relational, applied in the gap between how someone presents and what the observer expects.
Race and Competing Ideals
Any discussion of femininity and masculinity in women is incomplete without acknowledging that the standards are not universal even within a single country. Scholarship on appearance ideals and the Black body has traced how constructions of femininity and masculinity have historically been racialized. Black women have been subjected to a different set of standards than the white hegemonic model, with their bodies read as inherently more physical, more imposing, or more masculine by default under a gaze that treats white femininity as the norm.13Sociology Compass. Gazing into a Distorted Looking Glass: Masculinity, Femininity, Appearance Ideals, and the Black Body
This means a Black woman and a white woman displaying identical traits, the same short haircut, the same athletic build, the same assertive posture, will often be perceived differently. The Black woman is more likely to be coded as masculine and, by extension, to face the social penalties that come with that coding. These overlapping systems make it impossible to talk about masculine women as though they are one undifferentiated group experiencing one set of consequences. The experience is filtered through race, class, body size, disability, and numerous other axes.
Stigma in Daily Life
Research from Indonesia offers a particularly detailed look at what masculine women face on the ground. A study of women in Semarang, Central Java, who displayed masculine expression found that discrimination operated at multiple levels simultaneously. Within families, masculine women encountered what the researchers described as “corrective mechanisms,” meaning pressure from relatives to dress, speak, and behave in conventionally feminine ways. In workplaces, they experienced harassment and marginalization. In public spaces, they faced objectification and ridicule.14Atlantis Press. Embodied Masculinity in Women: A Study on Performativity and Resistance to Gender Norms The study described these women as navigating a society in which “hegemonic femininity is upheld as the only legitimate mode of womanhood,” leaving little breathing room for any other way of being a woman.
While that study focused on Java, the pattern it describes is broadly recognizable across many cultures. Families try to steer daughters back toward femininity through comments about clothing, posture, or dating choices. Employers may pass over a masculine-presenting woman for a client-facing role without stating the reason. Strangers may stare, comment, or become aggressive, particularly in gendered spaces like restrooms. The cumulative effect is a kind of low-level surveillance that feminine-presenting women rarely think about because they are not subjected to it.
Navigating Healthcare
Healthcare is one area where the gap between masculine women’s needs and the system’s design becomes especially apparent. A qualitative study of queer cisgender women and gender-expansive people assigned female at birth found that negative and harmful experiences during reproductive healthcare visits were common. Participants described encounters in which their providers made assumptions based on appearance, used language that did not fit, or failed to create a comfortable space for discussing bodies and health concerns. In response, these individuals developed active strategies to get their needs met, including seeking out information through community networks, looking for alternative care models, and carefully managing how much of their identity they disclosed to providers.15Women’s Health Issues. “The Health System Just Wasn’t Built for Us”: Queer Cisgender Women and Gender Expansive Individuals’ Strategies for Navigating Reproductive Health Care
The fact that patients are developing workarounds to get basic reproductive care says something about how rigidly the medical system assumes a link between femininity and female-bodied patients. A masculine woman walking into a gynecology office may encounter everything from confusion at the front desk to a provider who unconsciously rushes through the visit because the patient does not match the expected template. These friction points can discourage people from seeking care altogether, with real downstream effects on health outcomes.
How Film and Television Have Handled the Tomboy
Media depictions of masculine women have changed substantially over the past several decades, though “improved” might be too generous a word. Scholarly analysis of the tomboy character in film and television traces a trajectory from fairy tales, where female characters were assigned a narrow set of gendered traits, to contemporary on-screen portrayals that at least attempt to complicate the picture.16Buletin Stiintific. Tomboys and Gendered Stories: from Fairy-Tales to Contemporary Tropes in Movies and Television Series Early representations often treated the tomboy as a phase that would be resolved by the end of the story, usually through romance and a makeover. Modern versions are more likely to let the character stay masculine, though the narrative still frequently frames that masculinity as a source of conflict rather than simply a way of being.
Research examining tomboy characters across both European and South Asian cinema has found that these portrayals consistently attract societal backlash within their fictional worlds and, sometimes, from real audiences as well. The films studied, which ranged from Italian dramas to Indian productions, used tomboy characters to explore what happens when women refuse the gender scripts written for them, but the stories still tended to foreground punishment and struggle rather than normalcy.17Journal of Media and Communication. Tom Boys in Cinema Breaking Gender Norms and Facing Societal Backlash The result is a body of media that acknowledges masculine women exist but cannot quite stop treating their existence as a problem to be solved, a tension to be resolved, or a sacrifice that demands compensation.
When Masculinity and Womanhood Coexist Comfortably
For all the friction described above, plenty of masculine women navigate daily life without crisis. Many work in trades, the military, emergency services, or other environments where their presentation is unremarkable. Others move through white-collar settings where a blazer and flat shoes read as professional rather than provocative. Butch women in queer-friendly cities often describe their communities as spaces where masculinity in a woman is not just tolerated but admired. Even outside explicitly queer spaces, cultures vary enormously in how much latitude they give women on this front. Rural communities with a strong tradition of physical labor may barely register a woman’s broad shoulders and short nails as noteworthy, while an urban social scene oriented around fashion may scrutinize every deviation from a feminine ideal.
The question “what is a masculine woman?” has no clean boundary because femininity and masculinity are not binary states. They are loose clusters of traits whose membership changes over time. High heels were once men’s footwear. Pink was once a boys’ color. Power suits were once scandalous on women and are now considered standard professional dress. As the definitions shift, so does the population of women who fall outside them. What stays constant is the social mechanism: a culture draws a line, and anyone who crosses it gets noticed. Understanding that the line is the variable, not the woman standing on the other side of it, is probably the most useful thing research on this topic has to offer.