Where does “легкомысленность” come from?

легкомысленность (Russian) comes from Russian легкомы́сленный, from Russian -о-, from Old East Slavic -о-, from Proto-Slavic -o-.

легкомысленность (Russian): thoughtlessness

Definitions

  1. thoughtlessness

Ancestry of “легкомысленность”, step by step

StepLanguageWordMeaning
1Russianлегкомы́сленныйthoughtless, flippant
2Russian-о-water; art; owner
3Old East Slavic-о-—
4Proto-Slavic-o-—
Every word from Proto-Slavic -o- →Every word from Russian -о- →Every word from Old East Slavic -о- →