Where does “пустовать” come from?

пустовать (Russian) comes from Russian пусто́й, from Old East Slavic поустъ, from Proto-Slavic pȗstъ — desolate; empty.

пустовать (Russian): to be/stand empty, to be tenantless, to be...

Definitions

  1. to be/stand empty, to be tenantless, to be...

Ancestry of “пустовать”, step by step

StepLanguageWordMeaning
1Russianпусто́йfutile
2Old East Slavicпоустъ—
3Proto-Slavicpȗstъdesolate; empty
Every word from Proto-Slavic pȗstъ →Every word from Old East Slavic поустъ →Every word from Russian пусто́й →