Where does “легкомы́сленный” come from?

легкомы́сленный (Russian) comes from Russian мысль, from Proto-Slavic myslь, from Proto-Indo-European muHdʰ-.

легкомы́сленный (Russian): thoughtless, flippant

Definitions

  1. thoughtless, flippant

Ancestry of “легкомы́сленный”, step by step

легкомы́сленный traces back through two separate lines of ancestry.

via Russian мысль

StepLanguageWordMeaning
1Russianмысльthought; idea
2Proto-Slavicmyslьthought, idea
3Proto-Indo-EuropeanmuHdʰ-—

via Russian лёгкий

StepLanguageWordMeaning
1Russianлёгкийlight, lightweight; easy, facile, slight; lucky
2Proto-Slaviclьgъkъlight
3Proto-Indo-Europeanh₁lengʷʰ-light

Words derived from “легкомы́сленный”

Every word from Proto-Indo-European muHdʰ- →Every word from Proto-Slavic myslь →Every word from Russian мысль →