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At the centermost point of one's feelings or convictions. Deep down inside, I knew that what I did was wrong. I tried to put on a brave face after the breakup, but deep down I was in agony. He acts like a jerk most of the time, but deep down I think Nate is a good guy.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
At bottom, basically. For example, Deep down she was a rebel, or Although he would never admit it, deep down he was very fond of her. [c. 1900]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
deep ˈdown(informal) in your most private thoughts; in reality rather than in appearance: She’s very generous deep down, but this only comes out when you get to know her. ♢ He seems very confident but deep down I think he’s quite shy.
Farlex Partner Idioms Dictionary © Farlex 2017
mod. intense; profound. She gave this really deep speech to us about how we should stay off drugs.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
At bottom; basically: Deep down, she was still a rebel.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.