Where does “sumpweed” come from?

sumpweed (English) comes from English sump, from Middle English sompe, from Middle Low German sump, from Old Saxon sump, from Proto-Germanic sumpaz — fungus, sponge; swamp, marsh.

sumpweed (English): Iva annua, annual marsh elder, a North American herbaceous annual plant in the sunflower family

Definitions

  1. Iva annua, annual marsh elder, a North American herbaceous annual plant in the sunflower family

Ancestry of “sumpweed”, step by step

sumpweed traces back through two separate lines of ancestry.

via English sump

StepLanguageWordMeaning
1EnglishsumpA hollow or pit into which liquid drains, such as...
2Middle Englishsompemarsh, morass
3Middle Low Germansumpmarsh, swamp
4Old Saxonsumpswamp, marsh
5Proto-Germanicsumpazfungus, sponge; swamp, marsh

via English weed

StepLanguageWordMeaning
1EnglishweedAny plant regarded as unwanted at the place...
2Middle Englishweed—
3Old Englishwēodweed
4Proto-West Germanic*weudweed (unwanted plant)
Every word from Proto-Germanic sumpaz →Every word from Old Saxon sump →Every word from Middle Low German sump →
sumpweed — Etymology, Origin & Word History | Etymology Explorer