Where does “kwaitas” come from?

kwaitas (Proto-Balto-Slavic) comes from Proto-Indo-European ḱwoyt-o-s, from Proto-Indo-European ḱweyt- — to shine.

Ancestry of “kwaitas”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanḱwoyt-o-s—
2Proto-Indo-Europeanḱweyt-to shine
Every word from Proto-Indo-European ḱweyt- →Every word from Proto-Indo-European ḱwoyt-o-s →