Where does “know-it-all” come from?

know-it-all (English) comes from English all, from Middle English all, from Old English eall, from Proto-West Germanic all, from Proto-Germanic allaz, from Proto-Indo-European h₂él- — to grow, nourish.

know-it-all (English): Someone who claims to be knowledgeable or an...

Definitions

  1. Someone who claims to be knowledgeable or an...

Ancestry of “know-it-all”, step by step

know-it-all traces back through 3 separate lines of ancestry.

via English all

StepLanguageWordMeaning
1EnglishallEvery individual or anything of the given class,...
2Middle Englishallall; all, every
3Old Englisheallall; whole, entire; everything
4Proto-West Germanicallall
5Proto-Germanicallazall
6Proto-Indo-Europeanh₂él-to grow, nourish

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

via English IT

StepLanguageWordMeaning
1EnglishITInitialism of information technology; Initialism...
2Middle EnglishitAlternative form of hit
3Old Englishhitit
4Proto-Germanichitnominative/accusative singular neuter of *hiz
5Proto-Indo-Europeanḱe-demonstrative particle; here; this, here

Words derived from “know-it-all

Every word from Proto-Indo-European h₂él-Every word from Proto-Germanic allazEvery word from Proto-West Germanic all
know-it-all — Etymology, Origin & Word History | Etymology Explorer