Someone who uses they/them pronouns informally is signaling how they want to be referred to in everyday speech without necessarily making a formal declaration about gender identity. In practice, this means using "they" as a singular pronoun for that person, even when their gender is known or when they have not asked for any other language to change. The usage is increasingly common, grammatically standard in English, and supported by major style guides and dictionaries.
The phrase "informally" does a lot of work here. It distinguishes casual, conversational pronoun use from formal contexts like legal documents, medical records, or HR systems, where a person might use a different pronoun or name. Understanding the distinction matters because it changes what you should do, what you should assume, and what you should avoid.
This explainer covers the underlying mechanics of singular "they," the numbers behind its adoption, edge cases that trip people up, persistent misconceptions, practical steps for getting it right, and the limits of what informal pronoun use can tell you.
The Mechanics of Singular They
Singular "they" is not a new coinage. It has been part of English since at least the 1300s, originally used for an unknown or unspecified person. The modern extension is using it for a specific, known person who has indicated it as their pronoun. The grammar does not change: "they" takes plural verb agreement ("they are," "they walk"), and reflexive form is "themself" or "themselves," with "themself" gaining ground in singular contexts.
What makes informal use distinct is the absence of a formal request process. A person may simply start referring to themselves with they/them in conversation, in a social media bio, or in a casual introduction. They may not correct others. They may not have changed any records. The signal is conversational, not administrative.
The cognitive mechanism behind pronoun use is automatic. Once you know someone's pronoun, your language production system retrieves it the same way it retrieves a name or a job title. This means errors are usually slips of the tongue rather than deliberate statements, and correction is most effective when it is brief and immediate. A short "they, not she" followed by continued conversation works better than a long apology that shifts focus to the speaker.
The counterintuitive detail: people who use they/them informally are often not asking for a permanent, exclusive commitment to that pronoun. Some use it situationally, alongside other pronouns, or only in certain social contexts. Treating every informal use as a rigid rule can create more friction than it resolves.
How Common Is It, and How Fast Is It Changing
Adoption numbers vary by population and survey method, and they are changing quickly enough that any single figure dates fast. Rather than cite a specific current percentage, it is more useful to understand the shape of the trend: singular "they" has moved from a marginal usage to a mainstream one within roughly a single generation.
The linguistic infrastructure caught up first. The American Dialect Society named singular "they" its Word of the Year in 2015. Major dictionaries added or expanded entries for singular "they" in the years that followed. The Associated Press Stylebook has accepted singular "they" for both unknown and known individuals since 2017. The Chicago Manual of Style and the MLA Handbook now permit it. These are not radical style guides; they are the conservative standards used in journalism and academia.
The grammar itself is stable. What changed is social visibility and the willingness of institutions to codify usage that had been informal for centuries. A plain-language version: the rule did not change, but the permission to write it down did.
Age is the strongest demographic split in most available survey data. Younger adults report using or encountering they/them pronouns at higher rates than older adults, which means workplace and family communication is often where the most friction occurs. The practical implication is that informal pronoun use is not evenly distributed across settings, and you should expect variation by context rather than a uniform standard.
Edge Cases That Cause Most Confusion
The hardest situations are not the simple ones. They are the cases where informal use overlaps with uncertain intent. Here are the ones that come up most often.
Someone uses they/them in a bio but does not correct "she" in conversation. This usually means they are flexible or still deciding, not that they are testing you. Someone uses they/them informally and also uses a gendered pronoun. This is often called using multiple pronoun sets, and the person may genuinely have no preference between them. A person's formal records use a different pronoun than their casual usage. The casual usage is the correct guide for conversation; the record is a separate matter. You are unsure whether the usage is a pronoun preference or a grammatical hedge. When in doubt, mirror the person's own self-reference. A person uses they/them only around certain people. This is common and usually reflects safety or comfort, not inconsistency you should point out. You learned the pronoun secondhand. Confirm directly when it is socially appropriate rather than relying on a third party.
The counterintuitive rule that resolves most of these: follow the person's most recent self-reference in the current context, not the label you remember from a different setting. Pronoun use is contextual, and informal use is the most contextual of all.
Misconceptions and What They Get Wrong
The most persistent misconception is that singular "they" is grammatically incorrect or new. It is neither. The usage is centuries old, and the grammatical objection has been raised and resolved repeatedly in style guides. Using "they is" or "they was" is wrong; using "they are" for one person is standard.
A second misconception is that informal use is a soft version of a formal transition. In many cases it is simply a preference with no further meaning. Treating every informal they/them as a signal about identity, medical status, or transition can be intrusive and inaccurate.
A third is that getting it wrong is primarily a memory problem. In practice, pronoun errors are habit problems. The pronoun you have used for years competes with the new one, and the old habit wins under time pressure. This is why correction works better than effort alone: it interrupts the automatic retrieval.
A fourth is that one size fits all. Some people who use they/them informally want the pronoun used everywhere. Others want it only in certain circles. The honest position is that you cannot tell which from the pronoun alone, and asking is usually welcome when done respectfully and briefly.
A fifth is the belief that using they/them requires you to also avoid all gendered language about the person. It does not. The pronoun is one item in a larger set of language choices, and people often have specific preferences for other terms too. Address the pronoun and ask about the rest.
Practical Steps and Thresholds
Getting this right is mostly about a few concrete habits. None of them require extensive training.
First, mirror the person's own self-reference immediately. If they say "I'm going to grab my bag," the correct follow-up is "they're grabbing their bag," not a gendered pronoun. The mirroring habit builds the correct retrieval pathway faster than abstract memorization.
Second, correct in three words or fewer. "They, not she" is enough. A long correction makes the moment about you and increases the chance the other person remembers the apology rather than the pronoun.
Third, when you are unsure of a preference, ask once and briefly. "What pronouns do you use?" is a complete question. Ask it when it is relevant, not as an opening line, and accept the answer without commentary.
Fourth, distinguish formal from informal settings. In conversation, follow the person's informal usage. In documents, forms, and records, use what the person has formally provided or ask before changing anything.
Fifth, plan for the habit lag. Expect errors for a period after learning a new pronoun, especially if you knew the person under a different pronoun for years. The threshold that matters is not zero errors; it is consistent correction and no decline in effort over time.
Sixth, keep a simple red-flag list for yourself, because these are the behaviors that cause the most harm.
Correcting the person about their own pronoun usage. Using the wrong pronoun deliberately to make a point. Announcing your confusion to a group rather than asking privately. Treating informal usage as permission to ask about identity, medical history, or transition. Rounding "they/them sometimes" up to a fixed rule the person did not state.
The practical standard is simple: match the person's usage, correct briefly, ask once when needed, and do not make their pronoun a topic of public discussion.
What Informal Pronoun Use Does Not Tell You
The limits here matter as much as the mechanics. Informal they/them use is a language signal, not a disclosure, and it carries very little diagnostic or biographical information on its own.
It does not reliably indicate gender identity, sexual orientation, medical status, or transition plans. People use singular "they" for many reasons: grammar, privacy, flexibility, politics, habit, or simple preference. Reading deeper is usually a mistake, and acting on the reading is often intrusive.
It also does not tell you what to do in formal settings. A person may use they/them in conversation and a different pronoun in legal or medical records. Those are separate systems with separate rules, and you should not assume one maps cleanly onto the other.
It does not tell you how the person wants to be described to others. Some people are private about pronoun use outside a trusted circle. Passing the information along without permission can create real problems.
And it does not come with a guarantee of permanence. Pronoun use can change, and informal use is the most changeable form of all. The right posture is to keep following the current self-reference rather than treating any single statement as final.
If you want to be accurate rather than merely polite, the move is the same in every case: follow the person's most recent self-reference, ask once when it genuinely matters, and keep the exchange short.
This article is general educational information about language use, not a diagnosis, treatment plan, legal opinion, or investment recommendation, and it does not promise any outcome. For questions about a specific person's identity, health, or records, consult that person directly and, where relevant, a qualified local professional. If you or someone else is in immediate danger or at risk of self-harm, contact local emergency or crisis services right away.