Words like “dude,” “man,” “bro,” and “brah” have become staples of modern language. Today, they’re not just common terms of endearment; they are popular, powerful signals of solidarity. But how did these words become so significant, and where did they come from?
In the 1980s and 90s, “dude” was everywhere, lending its cool detached nonchalance to ordinary expressions like, “Dude, what’s up?”
The rise of “bro” as a term of address is propelled by the same forces popularizing “dude” all those years ago: the coolness it conveys and the social bonds it creates. When used to address someone directly, “dude” and “bro,” alongside “man,” all function grammatically as what are called “vocatives.”
Other English vocatives heard regularly include names and nicknames, familial terms like “dad” or “nana,” formal terms like “ma’am” or “your honor,” and group-directed terms like “hey you guys” or “y’all.”
But “dude,” “man,” and “bro” are a specific type of vocative known as “familiarizers.” Familiarizers mark a relationship as casual and provide social nuance beyond their attention-getting function. Their true power lies in how they help perform interactional work like signaling closeness or commiseration, expressing or softening disagreement, and managing conversational turns. Consider the different relational messages being delivered by the “bro” used in “Bro, you ate my pizza!” versus the one in “I love you too, bro.”
A glaring observation is that all these terms are masculine. Not only are “man,” “bro,” and “dude” about, well, dudes, but the same goes for “buddy” and “guy,” as well as the British “bruv” and the Australian “mate.”
This male-gendered leaning inspired linguists to playfully refer to this class of vocatives as “brocatives.” Feminine vocatives like “girl,” “girlfriend,” or “sis” certainly exist, but have not become broadly popular given the same male-as-norm bias that historically made “he” a default generic. In other words, we can’t unhear the femininity inscribed in “girl” while masculine vocatives’ ability to convey connection and informality over and above male-ness provides cross-over appeal to women.
While “man” and “dude” remain popular, listening in on Gen Z and Gen Alpha’s speech lends the impression that “bro” is nipping at their heels. Linguistic research based on self-reports, texts, tweets, and conversational recordings indeed shows an uptick in vocative “bro” for speakers born this century. Other variants, namely “bra” and “bruh,” are also gaining in popularity, especially in terms of self-reported usage among those who identified as non-Caucasian.
“Man” is the old timer of the bunch, with vocative roots going as far back as Old English, where it marked impatience or urged someone to action, as in “Think now, man!.” A more friendly familiarizing “man” appears colloquially in some Scottish, Irish, and Welsh writing around the 16th century.
In the early 20th century, “man” became linked with jazz culture, with African American men calling each other “man” to signal respect, fellowship, and dignity, a counter to the racist “boy” often used to denigrate them. As jazz and beat culture spread more broadly, jazz slang like “man” traveled with it.
“Dude” did not arrive on the scene until the late 1800s, when it was used to label a showy, ostentatious dandy. Its vocative era started in the 1930s and 40s when zoot-suited African American and Mexican American men turned a term of derision into one used to mark admiration and connection. Infused with counterculture cool, this new “dude” was picked up by surfers and stoners, and its promise as a familiarizer with a laid-back non-conformist vibe was fully realized.
Now, it seems, “bro” is having its day. While “bro” as an abbreviation for “brother” has long been part of English. Familiarizer use of “bro” and “bruh” gained traction in African American culture as respectful greetings in the 1900s. Expansion onto the mainstream scene likely comes by way of popular music, movies, and social media, which have made African-American language visible to young people of other backgrounds. As for “brah,” surfers are thought to have brought this familiarizer to the mainland U.S. after hearing it in Hawaiian English, though a similar form can be found in Caribbean and South African English.
The crucial thread tying all these “brocatives” together is that they initially passed through marginalized groups with counterculture caché before spreading to others who leverage this panache, sometimes spurring additional uses and meanings alongside (as with non-vocative “frat bro” and “bro culture”).
But what’s driving this intense need to use such familiarizers at all? The answer lies in changing social relations and practices which encourage use of address terms highlighting rapport, familiarity, and informality. In Shakespeare’s time, formal address terms like “lord” and “sir” were frequent ways to acknowledge relative rank, power, and status, but as more social mobility, increasing urbanization, and greater democratization have chipped away at formality and hierarchy in the centuries since, greater use of familiarizers paying heed to solidarity and equality has followed suit.
As for what’s driving the trend to switch it up from “man” to “dude” to “bro”? Well, bro, when you’re 17, the last people you want to sound anything like are the dudes that came before.
But regardless of the form they take, what doesn’t change is such familiarizers’ ability to project a sense of solidarity, jocularity, or chill detachment—a boon particularly for younger speakers where the value of sounding like you stand out while still fitting in is priceless.
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