in deep
Idioms-
Seriously involved; far advanced. For example, He was in deep with the other merchants and couldn't strike out on his own , or She used her credit cards for everything, and before long she was in deep .
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in deep water . Also, in over one's head . In trouble, with more difficulties than one can manage, as in The business was in deep water after the president resigned , or I'm afraid Bill got in over his head . These metaphoric expressions transfer the difficulties of being submerged to other problems. The first appears in Miles Coverdale's 1535 translation of the Book of Psalms (68:13): “I am come into deep waters.” The second, which also can signify being involved with more than one can understand, dates from the 1600s. Also see over one's head .
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"That was pretty hard to watch to be honest because they were in deep grief. And that will remain the case," he said.
From BBC ● Sep. 19, 2026
If you lie dead still and your pulse plummets, the algorithm might assume you’re in deep sleep—a reasonable deduction, but still a guess.
From The Wall Street Journal ● Sep. 6, 2026
“If you’re Loomered, you’re in deep trouble. That’s the end of your career, in a sense.”
From Salon ● Sep. 3, 2026
A conference anchored in deep regional ties, historic rivalries and a century of shared traditions.
From Los Angeles Times ● Aug. 30, 2026
He drummed his steering wheel with his forefingers and bit his lower lip as if he was suddenly in deep thought.
From "It All Comes Down to This" by Karen English
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
