be sunk in something
be sunk in (something)
To be fully and deeply engrossed in a thought or idea, perhaps because one is feeling melancholy. It's no use trying to talk to Helen when she's sunk in thought like that. It's as if we don't even exist!
See also: sunk
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be ˈsunk in somethingbe in a state of unhappiness or deep thought: She just sat there, sunk in thought.
Farlex Partner Idioms Dictionary © Farlex 2017