they

In 2019, Merriam-Webster added a meaning for "they" that has finally entered the mainstream: it can be "used to refer to a single person whose gender identity is nonbinary." People who are nonbinary—"someone who feels that their felt gender doesn't fit with socially constructed norms for their biological sex," according to Psychology Today—often prefer pronouns such as "them/they." See also genderqueer, nonbinary pronouns, singular they.