Where does “opačovati” come from?

opačovati (Old Czech) comes from Old Czech opáčiti, from Old Czech -íti, from Proto-Slavic -iti, from Proto-Indo-European -éyeti, from Proto-Indo-European -yeti — Creates transitive imperfective verbs from roots.

Ancestry of “opačovati”, step by step

StepLanguageWordMeaning
1Old Czechopáčitito turn around, to turn back, to return
2Old Czech-íti
3Proto-Slavic-itiDeverbal, iterative; Deverbal, causative;...
4Proto-Indo-European-éyetiForms causative imperfective verbs from roots;...
5Proto-Indo-European-yetiCreates transitive imperfective verbs from roots
Every word from Proto-Indo-European -yetiEvery word from Proto-Indo-European -éyetiEvery word from Proto-Slavic -iti