Where does “dwaalgeest” come from?

dwaalgeest (Dutch) comes from Dutch geest, from Middle Dutch gêest, from Old Dutch gēst, from Old Dutch gist, from Proto-West Germanic jestu, from Proto-Germanic jestuz, from Proto-Indo-European yes- — to foam; to boil.

dwaalgeest (Dutch): heretic, apostate, one with heterodox views

Definitions

  1. heretic, apostate, one with heterodox views

Ancestry of “dwaalgeest”, step by step

dwaalgeest traces back through two separate lines of ancestry.

via Dutch geest

StepLanguageWordMeaning
1Dutchgeestghost, spirit; mind, mental conscience; life...
2Middle Dutchgêest
3Old Dutchgēst
4Old Dutchgist
5Proto-West Germanicjestufermentation; byproducts or agents of...
6Proto-Germanicjestuzfermentation; byproducts or agents of...
7Proto-Indo-Europeanyes-to foam; to boil

via Dutch dwalen

StepLanguageWordMeaning
1Dutchdwalento stray, wander
2Middle Dutchdwalen
3Old Dutchdwalonto stray, wander
4Proto-GermanicdwalōnąTo withhold; hesitate; delay
5Proto-Indo-EuropeandʰwelH-to whirl, swirl, blur, obfuscate; to make turbid
Every word from Proto-Indo-European yes-Every word from Proto-Germanic jestuzEvery word from Proto-West Germanic jestu