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1. adjective Having the inside part or surface turned outward; reversed. I was in such a rush this morning that I didn't even notice that my pants were inside out!
2. adverb With the inside part or surface turned outward. I had been wearing my shirt inside out all day and nobody bothered to tell me!
3. adverb Thoroughly; down to the last detail. I've read this book inside out again and again, but I still enjoy it every time. I've been studying this material for weeks now, so I know it inside and out.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
1. With the inner surface turned out or revealed, as in He wore his shirt inside out. This expression dates from about 1600 and was soon used figuratively, as in He turned the verses inside out and revealed their hidden sense.
2. Extremely well, thoroughly, especially alluding to knowing something. For example, He knows this system inside out. [First half of 1900s]
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.
ˌinside ˈoutwith the part that is usually inside facing out: You’ve got your sweater on inside out. ♢ Turn the bag inside out and let it dry.
Farlex Partner Idioms Dictionary © Farlex 2017
mod. drunk. Wayne spends every weekend inside out.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
1. With the inner surface turned out; reversed: wore the sweatshirt inside out.
2. Informal As completely as possible; thoroughly: knew the city inside out.
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.