English definition of “themselves”
REFLEXIVE › the reflexive form of the pronoun 'they': They're both 16 - they're old enough to look after themselves.
EMPHASIS › used to emphasize the pronoun 'they' or the particular group of people you are referring to: The staff themselves were unhappy with the decision. They've decided to run the club themselves.
(all) by themselves › alone or without anyone else's help: The kids arranged the party all by themselves.
(all) to themselves › for their use only: They had the whole campsite to themselves.