Idioms for inside

    inside of, Informal. within the space or period of: Our car broke down again inside of a mile.
    inside out,
    1. with the inner side reversed to face the outside.
    2. thoroughly; completely: She knew the work inside out.

Origin of inside

Middle English word dating back to 1350–1400; see origin at in, side1

SYNONYMS FOR inside

7 Inside, interior both refer to the inner part or space within something. Inside is a common word, and is used with reference to things of any size, small or large: the inside of a pocket. Interior, somewhat more formal, denotes the inner part or the space or regions within; it usually suggests considerable size or extent, and sometimes a richness of decoration: the interior of a country, of the earth, of a cathedral.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for inside out

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with inside out (1 of 2)

inside out

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]

Idioms and Phrases with inside out (2 of 2)

inside

In addition to the idioms beginning with inside

  • inside of
  • inside out
  • inside track, the

also see:

  • on the inside
  • step in (inside)
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.