After over 600 years of being used as a gender-neutral singular pronoun, last year they became Merriam-Webster's Word of the Year. In September 2019 Merriam-Webster officially added the nonbinary pronoun sense of they to the dictionary. Merriam-Webster includes a definition of they as "used to refer to a single person whose gender identity is nonbinary."
Want to learn more? Read Merriam-Webster's deep dive on they as the Word of the Year for 2019. You can also explore nonbinary identity in the library's collection! Below you'll find a list of nonfiction books about nonbinary identity; click here for a list of fiction books that feature nonbinary characters.
These nonfiction books explore gender identity, and nonbinary identity in particular.