Where does “fuckweed” come from?

fuckweed (English) comes from English fuck, from Middle English fukken, from Old Norse fukka, from Proto-Germanic fukkōną, from Proto-Indo-European pewǵ- — to punch, fist-fight; to prick, poke, stab.

Ancestry of “fuckweed”, step by step

fuckweed traces back through two separate lines of ancestry.

via English fuck

StepLanguageWordMeaning
1EnglishfuckTo have sexual intercourse, to copulate; To have...
2Middle Englishfukkento fuck; to beat, strike
3Old Norsefukka—
4Proto-Germanicfukkōnąto blow, gust; to strike, assail; to copulate
5Proto-Indo-Europeanpewǵ-to punch, fist-fight; to prick, poke, stab

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-Indo-European pewǵ- →Every word from Proto-Germanic fukkōną →Every word from Old Norse fukka →