Where does “вскидываться” come from?

вскидываться (Russian) comes from Russian вски́дывать, from Russian вски́нуть, from Russian вс-, from Russian вз-, from Proto-Slavic vъz-, from Proto-Balto-Slavic uź — on, at; in return for.

вскидываться (Russian): to rear

Definitions

to rear

Ancestry of “вскидываться”, step by step

Step	Language	Word	Meaning
1	Russian	вски́дывать	to throw up, to toss up
2	Russian	вски́нуть	to throw up, to toss up
3	Russian	вс-	Alternative form of вз-
4	Russian	вз-	upwards, up; returning, re-
5	Proto-Slavic	vъz-	up; back
6	Proto-Balto-Slavic	uź	on, at; in return for

Every word from Proto-Balto-Slavic uź →Every word from Proto-Slavic vъz- →Every word from Russian вз- →