Gender-neutral pronouns are pronouns that do not refer to any specific gender. They are often used in place of traditional pronouns such as 'HE' and 'SHE' when the gender of the person being referred to is unknown or irrelevant. The most commonly used gender-neutral pronouns are 'ONE', 'THEM' and 'they'. These pronouns can be used to refer to a single person, multiple people, or an unspecified group of people.