Where does “you-know-what” come from?

you-know-what (English) comes from English you, from Middle English ȝow, from Old English ēowu, from Proto-Germanic awiz, from French avis, from Middle French advis, from Dutch advies, from Middle Dutch avijs.

you-know-what (English): The name of something the speaker does not want...

Definitions

  1. The name of something the speaker does not want...

Ancestry of “you-know-what”, step by step

you-know-what traces back through 3 separate lines of ancestry.

via English you

StepLanguageWordMeaning
1EnglishyouThe people spoken, or written to, as an object;...
2Middle EnglishȝowAlternative form of yow
3Old Englishēowuewe
4Proto-Germanicawizewe; sheep in general
5Frenchavisopinion; piece of advice; notice
6Middle Frenchadvisopinion
7Dutchadviesadvice
8Middle Dutchavijs
9Old Frenchavisopinion
10Old Frenchato; towards; belonging to
11LatinA
12Etruscan𐌀and, also
13Ancient Greekᾱ̔
14Phoenician𐤀ox; aleph; alef
15Egyptian𓃾

via English what

StepLanguageWordMeaning
1EnglishwhatWhich thing, event, circumstance, etc.: used...
2Middle Englishwhatwhat
3Old Englishhwætwhat; why; how many or how much
4Old English-ingForming nouns from verbs, indicating action,...
5Old English-tūnhomestead, village, town
6Old Englishtūnenclosure, yard; place; dwelling
7Proto-West Germanictūnfence
8Proto-Germanictūnąfence; enclosure
9Gaulishdunumfort; hill, hillfort
10Proto-Celticdūnomstronghold, rampart
11Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English know

StepLanguageWordMeaning
1EnglishknowTo perceive the truth or factuality of; to be...
2Middle Englishknowento know
3Old Englishcnāwanto know, perceive, recognise; to know, recognise,...
4Proto-West Germanicknāanto recognise, to know
5Proto-Germanicknēanąto know, recognise, understand
6Proto-Indo-Europeanǵneh₃-to know
Every word from Egyptian 𓃾Every word from Phoenician 𐤀Every word from Ancient Greek ᾱ̔