Where does “мъ́лвити” come from?

мъ́лвити (Old East Slavic) comes from Proto-Slavic mъlviti, from Proto-Indo-European mluH-, from Proto-Indo-European mlewH- — to say.

Ancestry of “мъ́лвити”, step by step

StepLanguageWordMeaning
1Proto-Slavicmъlvitito speak, to say
2Proto-Indo-EuropeanmluH-—
3Proto-Indo-EuropeanmlewH-to say
Every word from Proto-Indo-European mlewH- →Every word from Proto-Indo-European mluH- →Every word from Proto-Slavic mъlviti →