Almost everyone was silent and walked with downturned faces, engrossed in their own thoughts.

She'd been so engrossed in her thoughts she hadn't heard his approach.

Miss Roberts was, for once, too engrossed in her thoughts to look at the clock.

Her voice was wistful now and they stopped talking for a while, both engrossed in their own thoughts.

Engrossed in my unhappy thoughts, I didn't recognize trouble when it was standing right beside me.

I was so engrossed in my own thoughts it took a minute for his words to sink in.

The three men were engrossed in their own thoughts for a moment.

Engrossed in her thoughts, she hadn't heard him enter by the hallway door.

He checked the door of the church was locked and stood engrossed in his own thoughts about Cranston.

I was engrossed in my own thoughts and barely noticed it.