Theirtheirs

Theirtheirs is an informal term used in discussions of pronouns to describe a set that centers on the standard they/them pronouns and their possessive forms (their and theirs), sometimes treated as a single label within neopronoun discourse. It is not an officially recognized grammatical category, and its exact meaning can vary across communities.

In practice, people who align with this idea typically use they as the subject pronoun, them as the object pronoun, their as the possessive determiner, and theirs as the possessive pronoun. Reflexive forms are commonly self-variants such as themself or themselves, with preference determined by the individual.

Usage of theirtheirs reflects broader discussions about gender identity and inclusive language. Advocates emphasize respecting chosen pronouns as a matter of social courtesy and personal dignity, while critics note that pronoun practices continue to evolve and may require clarification in unfamiliar contexts. When unsure, the recommended approach is to ask for someone’s pronouns and use them consistently, or default to gender-neutral language or a person’s name until preferences are confirmed.

Examples: Sam uses theirtheirs pronouns. This bag is theirs. I spoke to them about the plan. Sam will join us, and they invited themself to the event, if that’s their preference.

Because pronoun usage is dynamic and personal, many style guides encourage clear communication, explicit consent, and sensitivity to individual variation. See also: pronoun, neopronoun, gender-neutral language.