Where does “weedkiller” come from?

weedkiller (English) comes from English killer, from English -er, from Middle English -er, from Old French -er, from Latin -āre, from Proto-Italic -āō, from Proto-Indo-European -eh₂yéti, from Proto-Indo-European -yéti — he, she.

weedkiller (English): A chemical agent that destroys unwanted plants (weeds) but not wanted ones (crops etc)

Definitions

  1. A chemical agent that destroys unwanted plants (weeds) but not wanted ones (crops etc)

Ancestry of “weedkiller”, step by step

weedkiller traces back through two separate lines of ancestry.

via English killer

StepLanguageWordMeaning
1EnglishkillerOne who or that which kills; That which causes...
2English-erA person or thing that does an action indicated...
3Middle English-eragentive suffix; agent noun suffix
4Old French-erAlternative form of -ier, verbal suffix;...
5Latin-ārefirst conjugation
6Proto-Italic-āōForms primarily denominative verbs
7Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

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 Chichewa iye