themself

pronoun

them·​self t͟həm-ˈself 

t͟hem-

: themselves sense 1b

—used chiefly as a gender-neutral reflexive form of they when referring to a single person in an indefinite way (as in "each person can decide for themself") or to a person who is nonbinary

Word History

First Known Use

15th century, in the meaning defined above