"They" is grammatically plural in form, but it is increasingly used as a singular pronoun in modern English, especially when referring to a person whose gender is unknown, non-binary, or intentionally unspecified. This usage is standard in both spoken and written English, supported by major style guides.
The pronoun "they" has long been used as a plural pronoun, as in "They are coming to dinner." But since the 16th century, it has also served as a singular pronoun in contexts where the referent's gender is not known or is irrelevant. For example, "Someone left their coat behind-someone must have forgotten it." Here, "they" refers to one person, yet the verb agrees with plural form.
This dual role often causes confusion. Some people assume "they" must always be plural because it ends in -y and sounds like a plural form. But grammar isn't determined by sound-it's governed by function. "They" can be singular when the antecedent is singular, even if the pronoun itself is plural in form.
Singular "they" emerged in Middle English as a way to avoid awkward constructions like "he or she" or "him or her." By the 18th century, writers such as Jane Austen and George Eliot used it routinely. Today, it's accepted in formal writing by institutions including the Oxford English Dictionary and the American Psychological Association.
Consider this sentence: "A student forgot their notebook. They were late to class." The antecedent "a student" is singular, but "they" refers to that one person. The verb "were" agrees with the plural pronoun, not the singular noun-a feature called collective agreement. This is standard in English, though it may feel unnatural to speakers trained in strict subject-verb agreement.
Another example: "If anyone calls, tell them I'm busy." Here, "anyone" is singular, but "them" is plural. This pattern is common and unremarkable in everyday speech. The same principle applies to "they" as a singular pronoun.
There are clear cases where "they" is correctly plural. When the antecedent is multiple people, "they" must be plural. For instance: "The team won their game. They celebrated together." The pronoun "they" refers to more than one person, so the plural form is required.
To distinguish between singular and plural uses, look at the antecedent. If it's one person, "they" can be singular. If it's two or more, "they" is plural. The pronoun doesn't change-it's the context that determines meaning.
| Antecedent | Pronoun Use | Correct Sentence |
|---|---|---|
| One person (unknown gender) | Singular | A customer asked for their receipt. They were satisfied. |
| Two or more people | Plural | The friends arrived early. They brought snacks. |
| Non-binary individual | Singular | My friend uses they/them pronouns. They prefer being addressed that way. |
One frequent mistake is treating "they" as inherently plural. That assumption leads to errors like: "They are my friend. They live nearby." If "they" refers to one person, the sentence is incorrect unless the speaker means multiple people. Corrected: "They are my friend. They lives nearby." - no, that's still wrong. The verb must agree with the subject: "They live nearby" is correct only if "they" is plural.
Another error is avoiding "they" altogether out of fear of breaking grammar rules. Some people replace it with "he or she," but this creates redundancy and disrupts flow. For example: "Each applicant must submit their application. He or she must include a photo." The repetition of "he or she" is clunky and outdated.
A lesser-known fact: "they" as a singular pronoun is not a modern invention. The Oxford English Dictionary documents its use in English literature as far back as 1375. In Chaucer's *The Canterbury Tales*, "they" appears in singular contexts. The idea that it's a recent trend is false.
Major style guides now endorse singular "they." The Chicago Manual of Style (17th ed.) states: "Use of the singular they is acceptable in most contexts, particularly when the gender of the person referred to is unknown or irrelevant." Similarly, the AP Stylebook allows it in news writing when appropriate.
I've used singular "they" in editing academic papers for years. A researcher wrote: "A participant reported feeling anxious. They described the event in detail." The editor changed it to "he or she" to meet older standards-but the original was clearer and more inclusive. After consulting the APA Publication Manual, we reverted to "they." The revision improved readability and reduced gender bias.
Even in legal documents, singular "they" is gaining traction. The U.S. Department of Justice's 2022 guidance on gender-inclusive language recommends using "they" for individuals who do not identify with binary genders. This reflects widespread acceptance beyond informal use.
"Is they always plural?" is not a question about grammar rules alone-it's about identity, clarity, and inclusivity. The assumption that "they" must be plural ignores how language evolves to reflect social change. Using "they" for a single person is not a mistake-it's a reflection of linguistic flexibility.
Some still argue against it, claiming it violates "subject-verb agreement." But the rule applies to the subject, not the pronoun. In "They are here," "they" is the subject, and "are" agrees with it. If "they" refers to one person, the subject is still plural in form, so the verb remains plural. There's no violation.
For those who struggle with it, try replacing "they" with "he or she" mentally. "He or she is late" sounds odd in modern English. "They are late" flows better. The brain adapts quickly when exposed to natural usage.
If you're unsure whether "they" is singular or plural, ask: "How many people am I talking about?" One? Use "they" as singular. More than one? Use "they" as plural. The answer lies in the antecedent, not the pronoun itself.