Where does “счастливо” come from?

счастливо (Russian) comes from Russian счастли́вый, from Russian сча́стье, from Old East Slavic съчастиѥ, from Proto-Slavic sъčęstьje, from Proto-Slavic sъ-, from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.

счастливо (Russian): happily in a happy manner

Definitions

  1. happily in a happy manner

Ancestry of “счастливо”, step by step

StepLanguageWordMeaning
1Russianсчастли́выйhappy
2Russianсча́стьеhappiness, good luck
3Old East Slavicсъчастиѥ—
4Proto-Slavicsъčęstьjehappiness
5Proto-Slavicsъ-good
6Proto-Indo-Europeanh₁su-good
7Proto-Indo-Europeanh₁wes-good; to be cheerful, happy; to eat, to feast
Every word from Proto-Indo-European h₁wes- →Every word from Proto-Indo-European h₁su- →Every word from Proto-Slavic sъ- →
счастливо — Etymology, Origin & Word History | Etymology Explorer