Where does “errorous” come from?

errorous (English) comes from English ous, from English ou, from Afrikaans ou, from Dutch oud, from Middle Dutch out, from Old Dutch ald, from Proto-West Germanic ald, from Proto-Germanic aldaz — to grow, nourish.

Ancestry of “errorous”, step by step

errorous traces back through two separate lines of ancestry.

via English ous

StepLanguageWordMeaning
1Englishousplural of ou
2EnglishouA probably extinct species of Hawaiian...
3AfrikaansouAn old fellow, guy, bloke; attributive form of...
4Dutchoudold
5Middle Dutchoutold
6Old Dutchald—
7Proto-West Germanicaldold
8Proto-Germanicaldazold, grown up
9Proto-Indo-Europeanh₂eltós—
10Proto-Indo-Europeanh₂él-to grow, nourish

via English error

StepLanguageWordMeaning
1EnglisherrorThe state, quality, or condition of being wrong;...
2Middle Englisherrour—
3Old Frencherrorto err; to make an error
4Latinerrorwandering; wavering, uncertainty; error, mistake,...
5Latin-orused to form a third-declension masculine...
6Proto-Italic-ōsCreates masculine action nouns or result nouns...
7Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
8Proto-Indo-European-oss—
9Proto-Indo-European-osCreates action nouns or result nouns from verbs;...
Every word from Proto-Indo-European h₂él- →Every word from Proto-Indo-European h₂eltós →Every word from Proto-Germanic aldaz →