Where does “ਵਾਦ” come from?

ਵਾਦ (Sanskrit) comes from Sanskrit वाद, from Sanskrit वद्, from Proto-Indo-European *h₂wedH-.

Ancestry of “ਵਾਦ”, step by step

StepLanguageWordMeaning
1Sanskritवादspeaking, saying; making sound, playing an...
2Sanskritवद्to speak; API 10 U
3Proto-Indo-European*h₂wedH-—
Every word from Proto-Indo-European *h₂wedH- →Every word from Sanskrit वद् →Every word from Sanskrit वाद →