بت (Classical Persian) comes from Middle Persian bwt', from Bactrian Βοδδο, from Sanskrit बुद्ध, from Proto-Indo-Aryan buddʰás, from Proto-Indo-Iranian bʰudᶻdʰás, from Proto-Indo-European bʰudʰtós, from Proto-Indo-European bʰewdʰ- — to be awake, be aware.