Here are some synonyms for captivated:
* Enthralled
* Spellbound
* Mesmerized
* Charmed
* Engrossed
* Intrigued
Example Sentences:
* The audience was captivated by the magician's performance.
* The beautiful scenery captivated the travelers.
* The story was so captivating that I couldn't put the book down.
In essence, when someone is captivated, they are so drawn in by something that they are completely absorbed by it.