He was lost in the world of the book.

Meaning: The man was so engrossed in the book that he forgot about everything else.

Choice of Words: Lost means unable to find your way. World is the planet that we live on.

Alternative Expressions

He was absorbed in the book's realm.

Meaning: This means that he was so interested in the book that he felt like he was actually there.

Choice of Words: The word "absorbed" means that he was completely taken up by something. The "book's realm" means the world that was created by the author of the book. So, he was so interested in the book that he felt like he was actually there.

He was transported to the book's universe.

Meaning: This means that he was so interested in the book that he felt like he was actually in the story.

Choice of Words: The word "transported" means that he was moved from one place to another. The "book's universe" means the world that was created by the author of the book. So, he was so interested in the book that he felt like he was actually in the story.

Related Expressions