Where does “Агаѳо́никъ” come from?

Агаѳо́никъ (Old Church Slavonic) comes from Ancient Greek ἀγαθός, from Proto-Hellenic əgatʰós, from Proto-Indo-European m̥ǵh₂-dʰh₁-ós, from Proto-Indo-European dʰeh₁- — to do, put, place.

Ancestry of “Агаѳо́никъ”, step by step

Агаѳо́никъ traces back through 3 separate lines of ancestry.

via Ancient Greek ἀγαθός

StepLanguageWordMeaning
1Ancient Greekἀγαθόςgood, brave, noble, moral; fortunate, lucky;...
2Proto-Hellenicəgatʰósgood
3Proto-Indo-Europeanm̥ǵh₂-dʰh₁-ósmade great; whose deeds are great
4Proto-Indo-Europeandʰeh₁-to do, put, place

via Ancient Greek Ἀγαθόνικος

StepLanguageWordMeaning
1Ancient GreekἈγαθόνικος—
2Ancient GreekΝῑ́κη—
3Ancient Greekνῑ́κηconquered; victory

via Ancient Greek νίκη

StepLanguageWordMeaning
1Ancient Greekνίκηthe act of winning: victory, success
Every word from Proto-Indo-European dʰeh₁- →Every word from Proto-Indo-European m̥ǵh₂-dʰh₁-ós →Every word from Proto-Hellenic əgatʰós →