Where does “освободиться” come from?

освободиться (Russian) comes from Russian -ся, from Old East Slavic сѧ, from Proto-Slavic sę, from Proto-Balto-Slavic *sen, from Proto-Indo-European swé — self.

освободиться (Russian): to get free, to break free, to free oneself (from), to get loose

Definitions

to get free, to break free, to free oneself (from), to get loose

Ancestry of “освободиться”, step by step

Step	Language	Word	Meaning
1	Russian	-ся	Reflexive suffix appended to finite verbs and...
2	Old East Slavic	сѧ	—
3	Proto-Slavic	sę	oneself: myself, yourself, himself, herself,...
4	Proto-Balto-Slavic	*sen	oneself
5	Proto-Indo-European	swé	self

Every word from Proto-Indo-European swé →Every word from Russian -ся →Every word from Proto-Balto-Slavic *sen →