Can Their Be Singular?

Singular they is the use in English of the pronoun they or its inflected or derivative forms, them, their, theirs, and themselves (or themself), as an epicene (gender-neutral) singular pronoun. It typically occurs with an unspecified antecedent, in sentences such as: "Somebody left their umbrella in the office.

Can they be used as singular?

What is the singular “they”? The singular “they” is a generic third-person pronoun used in English. It's not the only third-person singular pronoun—other third-person singular pronouns are “she” and “he” as well as less common options such as “ze” or “hen.” ... A person should enjoy his or her vacation.

Can their be used for one person?

It is absolutely allowed to use the singular "their" (or "they")! The singular "they" has been used by notable writers for centuries: it should be noted that singular they has been employed by revered writers throughout its history.