Where does “вваливаться” come from?

вваливаться (Russian) comes from Russian вва́ливать, from Russian ввали́ть, from Russian в-, from Old Church Slavonic въ-, from Proto-Slavic vъ(n)-, from Proto-Indo-European h₁én — in.

вваливаться (Russian): to tumble (in, into)

Definitions

to tumble (in, into)

Ancestry of “вваливаться”, step by step

Step	Language	Word	Meaning
1	Russian	вва́ливать	to heave (into)
2	Russian	ввали́ть	to heave (into)
3	Russian	в-	in, into
4	Old Church Slavonic	въ-	in, into describing an action of moving inside of something
5	Proto-Slavic	vъ(n)-	—
6	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Russian в- →Every word from Proto-Slavic vъ(n)- →