Where does “prewarn” come from?

prewarn (English) comes from English warn, from Middle English warnen, from Old English warnian, from Proto-Germanic warnōną, from Proto-Indo-European wēr-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.

prewarn (English): To warn beforehand; to forewarn

Definitions

  1. To warn beforehand; to forewarn

Ancestry of “prewarn”, step by step

prewarn traces back through two separate lines of ancestry.

via English warn

StepLanguageWordMeaning
1EnglishwarnTo make (someone) aware of (something impending); especially
2Middle Englishwarnento warn; admonish
3Old EnglishwarnianAlternative form of wearnian; to warn, caution,...
4Proto-Germanicwarnōnąto be careful; to warn
5Proto-Indo-Europeanwēr-true
6Proto-Indo-Europeanwer-to burn; to cover, heed, notice; squirrel

via English pre

StepLanguageWordMeaning
1EnglishpreBefore; Precum, Cowper's fluid, pre-ejaculate; To...
2Latinpraebefore; in front; in front of
3Proto-Italicpraibefore; in front of
4Proto-Indo-Europeanpreh₂-before, in front
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European wer-