There are multiple origins and translations for the name Dai:
1. Shortened form of the Biblical name David - "beloved" - ancient Israel's king.
2. Derived from the Arabic (داعي) [daee] semantics - "propagandist; preacher calling to the true faith (Islam)". An epithet of Prophet Muhammad.
3. Japanese name (大) means - "great, large".
4. Vietnamese name (Dài) interpretation - "long; penis".
May also refer to Dai (feminine name ).