Where does “kṣáps” come from?

kṣáps (Proto-Indo-Aryan) comes from Proto-Indo-Iranian kšáps, from Proto-Indo-European kʷséps — night.

Ancestry of “kṣáps”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniankšápsnight
2Proto-Indo-Europeankʷsépsnight
Every word from Proto-Indo-European kʷséps →Every word from Proto-Indo-Iranian kšáps →