Where does “рой” come from?

рой (Russian) comes from Old East Slavic рои, from Proto-Slavic rojь, from Proto-Indo-European h₃reyH-, from Proto-Indo-European h₃er- — to move, to stir; to rise, to spring; to quarrel,...

рой (Russian): swarm; second-person singular imperative...

Definitions

  1. swarm; second-person singular imperative...

Ancestry of “рой”, step by step

StepLanguageWordMeaning
1Old East Slavicрои—
2Proto-Slavicrojьswarm
3Proto-Indo-Europeanh₃reyH-to move, set in motion
4Proto-Indo-Europeanh₃er-to move, to stir; to rise, to spring; to quarrel,...
Every word from Proto-Indo-European h₃er- →Every word from Proto-Indo-European h₃reyH- →Every word from Proto-Slavic rojь →