они

Etymology
Ultimately from.

Pronoun

 * 1)  they

Etymology
From.

Noun

 * 1) mountain river

Etymology
, from.

The prefixation of after prepositions comes from Proto-Slavic forms such as  (sŭ(n), "with", cf. Greek ', Latin '), that originally ended in -n and governed oblique cases. Since the prepositions and the pronouns occurred together so often, it was easy to lose track of which word the final -n belonged to, and the n was reinterpreted as part of the pronouns (Old English, in the same way, lost its -n except before vowels, and sometimes gave it to the following word, as in English from Old English ), so that Proto-Slavic   became modern Russian , and this new rule was extended to all prepositions governing any third-person pronoun.

Pronoun

 * 1)  they
 * 2)  they
 * 3)  they

Usage notes

 * An н is prefixed to any third-person pronoun in an oblique case whenever a preposition that directly governs it is immediately in front of it: (from her),  (on him),  (they have),  (to him),  (with her).
 * When the preposition does not directly govern (i.e., when they are possessive pronouns), then no н- is inserted:  (at his brother’s),  (about her mother),  (in their room).
 * While Russian does not have an official pronoun for non-binary individuals, some have claimed the usage of as an equivalent to the singular  in English.

Pronoun

 * 1) they