Where does “vagary” come from?

vagary (English) comes from Latin vagor, from Latin -or, from Proto-Italic -ōs, from Proto-Indo-European -ōs, from Proto-Indo-European -oss, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

vagary (English): An erratic, unpredictable occurrence or action;...

Definitions

  1. An erratic, unpredictable occurrence or action;...

Ancestry of “vagary”, step by step

vagary traces back through two separate lines of ancestry.

via Latin vagor

StepLanguageWordMeaning
1LatinvagorI ramble, wander, stroll about, roam, rove; I...
2Latin-orused to form a third-declension masculine...
3Proto-Italic-ōsCreates masculine action nouns or result nouns...
4Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
5Proto-Indo-European-oss
6Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via Italian vagare

StepLanguageWordMeaning
1Italianvagareto wander, ramble, roam, range
2Latinvagaripresent active infinitive of vagor; to wander,...
3Latinvaguswandering, rambling, strolling; uncertain, vague
4Proto-Italicwagos
5Proto-Indo-EuropeanHwogos

Words derived from “vagary

Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin vagor