The name "Yawanathan Chaasad" does not have a widely recognized meaning in commonly known languages or cultures. "Yawanathan" may be a variant of "Jonathan," which has Hebrew origins and means "God has given." The surname "Chaasad" could be a variant spelling or hold specific cultural significance, but it isn't commonly documented.
If you are looking for a specific cultural or personal interpretation for the name, please provide more context, and I would be happy to assist!