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. Could you please let them know where they can get it?" * "The patient should be told at the outset how much they will be required to pay." * "But a journalist should not be forced to reveal their sources."