Idioms

in and out

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in and out

1. Thoroughly; down to the last detail. I've been studying this material for weeks now, so I know it in and out. I know this book in and out because I've read it about a million times. You need to know your lines in and out because we won't be using scripts at the next rehearsal.
2. Alternating between being at or in a location and being gone from it. The boss has been in and out of the office all day. The kids are in and out so much that they're constantly letting bugs into the house. Mom's been in and out all day, but she said she'd be home for dinner.
See also: and, out
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

ˌin and ˈout (of something)

going regularly to a place: I’ve been in and out of the travel agency all this week, trying to arrange my holiday. ♢ After the accident, he was in and out of hospital for a couple of years.
See also: and, out
Farlex Partner Idioms Dictionary © Farlex 2017
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