Where does “will o' the wisp” come from?

will o' the wisp (English) comes from English Will, from English william, from Middle English William, from Anglo-Norman Willame, from Old High German Willahelm, from Old High German helm, from Proto-West Germanic helm, from Proto-Germanic helmaz — to pierce, strike; to stick; prick; stab.

will o' the wisp (English): Any of several kinds of pale, flickering light, appearing over marshland in many parts of the world with diverse folkloric explanations and multiple possible scientific explanations including bioluminescence and chemiluminescence

Definitions

  1. Any of several kinds of pale, flickering light, appearing over marshland in many parts of the world with diverse folkloric explanations and multiple possible scientific explanations including bioluminescence and chemiluminescence

Ancestry of “will o' the wisp”, step by step

will o' the wisp traces back through 3 separate lines of ancestry.

via English Will

StepLanguageWordMeaning
1EnglishWillA weak-side linebacker
2Englishwilliamradiotelephony clear-code word for the letter W
3Middle EnglishWilliam
4Anglo-NormanWillame
5Old High GermanWillahelmWilliam
6Old High Germanhelmhelmet
7Proto-West Germanichelmhelmet
8Proto-Germanichelmazhelmet
9Proto-Germanichalmazhalm; stem; stalk; straw; hay
10Proto-Indo-Europeanḱolh₂mosstalk
11Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab

via English The

StepLanguageWordMeaning
1EnglishTheUsed before a noun phrase, including a simple noun
2Middle Englishþethe; Second-person singular pronoun indicating a...
3Middle EnglishinAny kind of accomodation; particularly; A home or...
4Old Englishinnin; inn
5Old Englishinneinside, in; indoors
6Proto-Germanicinnaiwithin, inside
7Proto-Germanicinin; into
8Proto-Indo-Europeanénin

via English of

StepLanguageWordMeaning
1EnglishofAPI; Expressing distance or motion; "Expressing...
2Middle Englishofof; off; until
3Old Englishofof, from, off, out of
4Old Englishæfof
5Proto-Germanic*ab
6Proto-Indo-Europeanapó

Words derived from “will o' the wisp

Every word from Proto-Indo-European ḱelh₂-Every word from Proto-Indo-European ḱolh₂mosEvery word from Proto-Germanic halmaz