Where does “dogadować” come from?

dogadować (Polish) comes from Polish dogadać, from Polish do-, from Old Polish do-, from Proto-Slavic do-.

Ancestry of “dogadować”, step by step

StepLanguageWordMeaning
1Polishdogadaćto jibe someone
2Polishdo-further, additionally; completing something...
3Old Polishdo-appended to verbs to indicate completion
4Proto-Slavicdo-—
Every word from Proto-Slavic do- →Every word from Polish do- →Every word from Old Polish do- →