Where does “nāgás” come from?

nāgás (Proto-Indo-Aryan) comes from Proto-Indo-Iranian nāgás, from Proto-Indo-European sneg- — to crawl, creeping thing.

Ancestry of “nāgás”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniannāgás—
2Proto-Indo-Europeansneg-to crawl, creeping thing
Every word from Proto-Indo-European sneg- →Every word from Proto-Indo-Iranian nāgás →