Strong's 846 (αὐτός)

her, it(-self), one, the other, (mine) own, said, (self-), the) same, ((him-, my-, thy- )self, (your-)selves, she, that, their(-s), them(-selves), there(-at, - by, -in, -into, -of, -on, -with), they, (these) things, this (man), those, together, very, which

the reflexive pronoun self, used (alone or in the comparative G1438 (ἑαυτοῦ)) of the third person , and (with the proper personal pronoun) of the other persons

from the particle (perhaps akin to the base of G109 (ἀήρ) through the idea of a baffling wind) (backward);