Where does “legmostohább” come from?

legmostohább (Hungarian) comes from Hungarian mostohább, from Hungarian mostoha, from Bulgarian ма́щеха, from Proto-Slavic maťexa — stepmother.

Ancestry of “legmostohább”, step by step

StepLanguageWordMeaning
1Hungarianmostohább—
2Hungarianmostohastep- parent, child, or sibling
3Bulgarianма́щехаstepmother
4Proto-Slavicmaťexastepmother
Every word from Proto-Slavic maťexa →Every word from Bulgarian ма́щеха →Every word from Hungarian mostoha →