themself

Meaning

1. (pronoun, proscribed, reflexive, sometimes, third-person) The reflexive form of they, the third-person singular personal pronoun. The single person previously mentioned, as the object of a verb or following a preposition (also used for emphasis).
2. (nonstandard, proscribed, sometimes, third-person) Synonym of themselves (the third-person plural).

Synonyms

oneself

Pronounced as (IPA)

/ðɛmˈsɛlf/

Etymology

Inherited from Middle English: theimself

In summary

From Middle English theimself. Equivalent to them + -self. Reinforced by analogy with the singular-plural distinction between yourself and yourselves.