Where does “bromfiets” come from?

bromfiets (Dutch) comes from Dutch brommen, from German brummen, from Middle High German brummen, from Old High German *brummōn, from Proto-West Germanic *brummōn — to drone, hum, growl.

bromfiets (Dutch): moped, limited to 50 cc engine and 45 km/h speed;...

Definitions

  1. moped, limited to 50 cc engine and 45 km/h speed;...

Ancestry of “bromfiets”, step by step

bromfiets traces back through two separate lines of ancestry.

via Dutch brommen

StepLanguageWordMeaning
1Dutchbrommento mutter, to mumble; to hum, to buzz; to brag,...
2Germanbrummento growl; to hum; to boom
3Middle High Germanbrummendrone, grumble
4Old High German*brummōn
5Proto-West Germanic*brummōnto drone, hum, growl

via Dutch fiets

StepLanguageWordMeaning
1Dutchfietsbicycle; motorbike
Every word from Proto-West Germanic *brummōnEvery word from Old High German *brummōnEvery word from Middle High German brummen