Where does “legkorszerűtlenebb” come from?

legkorszerűtlenebb (Hungarian) comes from Hungarian korszerűtlenebb, from Hungarian korszerűtlen, from Hungarian korszerű, from Hungarian kör, from French Cœur, from Middle French cœur, from Old French cuer, from Vulgar Latin *corem — heart.

Ancestry of “legkorszerűtlenebb”, step by step

StepLanguageWordMeaning
1Hungariankorszerűtlenebb
2Hungariankorszerűtlenout of date, outdated, anachronistic
3Hungariankorszerűmodern, up-to-date
4Hungariankörcircle; circle, ring, company; round, lap
5FrenchCœurheart
6Middle FrenchcœurAlternative form of coeur
7Old Frenchcuerheart
8Vulgar Latin*corem
9Latincorheart; soul, mind
10Proto-Italickordheart
11Proto-Indo-Europeanḱḗrheart
Every word from Proto-Indo-European ḱḗrEvery word from Proto-Italic kordEvery word from Latin cor