hand in glove

hand in glove idiom
On intimate terms, in close association, as in The internist is hand in glove with the surgeon, so you'd better get a second opinion. This metaphoric expression for a close fit was already included in John Ray's 1678 collection of proverbs, when it was put hand and glove.

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.

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