zir UK /zɪə(ɹ)/US /zɪɹ/determiner 1noun 1pronoun 1forms 2 determiner1 •(nonstandard, rare) Belonging to zir, gender-neutral third-person singular possessive adjective, equivalent to singular their and coordinate with his and her. noun1 •A large clay jug for storing water, common in Egypt and the Sudan since ancient times. pronoun1 •(nonstandard, rare) Gender-neutral third-person singular accusative (object) pronoun, equivalent to singular them and coordinate with him and her.However, it soon became very lonely as none of Alice’s school friends could see zir anymore and they soon forgot all about zir. — 2002 formszirs · hirself