Where does “know-it-allism” come from?

know-it-allism (English) comes from English know-it-all, 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-allism (English): The attitude of a know-it-all

Definitions

  1. The attitude of a know-it-all

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

know-it-allism traces back through two separate lines of ancestry.

via English know-it-all

StepLanguageWordMeaning
1Englishknow-it-allSomeone who claims to be knowledgeable or an...
2EnglishallEvery individual or anything of the given class,...
3Middle Englishallall; all, every
4Old Englisheallall; whole, entire; everything
5Proto-West Germanicallall
6Proto-Germanicallazall
7Proto-Indo-Europeanh₂él-to grow, nourish

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems
Every word from Proto-Indo-European h₂él-Every word from Proto-Germanic allazEvery word from Proto-West Germanic all