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Synonyms

thick as thieves

Idioms  
  1. Intimate, closely allied, as in The sisters-in-law are thick as thieves. This term uses thick in the sense of “intimate,” a usage that is obsolete except in this simile. [Early 1800s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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"They're all thick as thieves communicating, and that's an amazing feeling."

From BBC ● Apr. 9, 2026

Swifties believe the lyrics “Now she gets the house, gets the kids, gets the pride / Picture me, thick as thieves with your ex-wife,” are actually a reference to West and Kardashian’s divorce, not Braun’s.

From Los Angeles Times ● Oct. 21, 2022

“They were literally thick as thieves in the sense of sticking together and having each other’s back. They were best friends as well.”

From Washington Times ● Apr. 7, 2022

We were thick as thieves, the two of us.

From New York Times ● Feb. 22, 2022

Basil Stag Hare and Jess Squirrel were as thick as thieves.

From "Redwall" by Brian Jacques

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