themselves

pronoun

1. 1

   The reflexive case of they, the third-person plural personal pronoun. The group of people, animals, or objects previously mentioned, as the object of a verb or following a preposition (also used for emphasis).

   They’ve hurt themselves.

   They fought among themselves.

   They are going to try climbing Mount Everest themselves.

   The preposterous altruism too![…]Resist not evil. It is an insane immolation of self—as bad intrinsically as fakirs stabbing themselves or anchorites warping their spines in caves scarcely large enough for a fair-sized dog.

2. 2

   The reflexive case 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).

   Would whoever stole my phone please make themselves known.

   I don't want anyone to fight among themselves.

   Everyone must do it themselves.

   Let nothing be done through strife or vainglory; but in lowliness of mind let each esteem other better than themselves.