From Wiktionary, the free dictionary
From Sanskrit बुद्ध (buddha, literally “awakened”) + -డు (-ḍu).
బుద్ధుడు • (buddhuḍu) m (plural బుద్ధులు)
- (literary) a wise or learned man, sage, one who is awakened or enlightened.
- The name is especially applied to Buddha, the founder of Buddhism.