Where does “styrtflom” come from?

styrtflom (Norwegian Bokmål) comes from Norwegian Bokmål styrt, from Norwegian Bokmål styrte, from Middle Low German störten, from Old Saxon sturtian, from Proto-West Germanic sturtijan, from Proto-Indo-European (s)ter- — strong, firm, stiff, rigid; rigid, stiff; to...

styrtflom (Norwegian Bokmål): a flash flood

Definitions

  1. a flash flood

Ancestry of “styrtflom”, step by step

styrtflom traces back through two separate lines of ancestry.

via Norwegian Bokmål styrt

StepLanguageWordMeaning
1Norwegian Bokmålstyrta shower, shower bath; an inundation; a crash
2Norwegian Bokmålstyrteto rush, dash; to fall down, topple over, plunge;...
3Middle Low Germanstörten
4Old Saxonsturtian
5Proto-West Germanicsturtijanto fall down, tumble
6Proto-Indo-European(s)ter-strong, firm, stiff, rigid; rigid, stiff; to...

via Norwegian Bokmål flom

StepLanguageWordMeaning
1Norwegian Bokmålfloma flood; imperative of flomme
2Old Norseflaumreddy
3Proto-Germanicflaumazstream; current; flood; eddy
4Proto-Indo-Europeanplew-to fly, flow, run
Every word from Proto-Indo-European (s)ter-Every word from Proto-West Germanic sturtijanEvery word from Old Saxon sturtian