Where does “dunderkarl” come from?

dunderkarl (Swedish) comes from Swedish Karl, from Old Swedish karilʀ, from Old Norse Karl, from Proto-Norse ᚲᚨᚱᛁᛚᚨᛉ, from Proto-Germanic karilaz, from Proto-Germanic karaz, from Proto-Indo-European ǵerh₂- — to grow old, to mature.

dunderkarl (Swedish): a good dude, a heck of a guy

Definitions

  1. a good dude, a heck of a guy

Ancestry of “dunderkarl”, step by step

dunderkarl traces back through two separate lines of ancestry.

via Swedish Karl

StepLanguageWordMeaning
1SwedishKarl
2Old Swedishkarilʀa man
3Old NorseKarlman
4Proto-Norseᚲᚨᚱᛁᛚᚨᛉ
5Proto-Germanickarilazfree man, franklin; little man, young man
6Proto-Germanickaraz
7Proto-Indo-Europeanǵerh₂-to grow old, to mature

via Swedish dunder

StepLanguageWordMeaning
1Swedishdundera deep, loud noise like from a lightning bolt; booming, thunder
2Middle Low Germandunner
3Old Saxonthunar
4Proto-West Germanicþunrthunder
5Proto-GermanicÞunrazThor, god of thunder
6Proto-Indo-European(s)ten-to thunder, rustle, rumble, drone, groan; to...
Every word from Proto-Indo-European ǵerh₂-Every word from Proto-Germanic karazEvery word from Proto-Germanic karilaz