thick as thieves

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thick as thieves

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From thick (“friendly, intimate”), first attested in 1827 as "thick as two thieves".

adjective thick as two thieves · close as thieves

  1. idiomatic, not comparable, of friends or members of a group Intimate, close-knit, tight. So the king sneaked into the wigwam and took to his bottle for comfort, and before long the duke tackled HIS bottle; and so in about a half an hour they was as thick as thieves again, and the tighter they got the lovinger they got, and went off a-snoring in each other's arms.

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MLA

"thick as thieves." Wiktionary, via Micwyn, micwyn.com/word/thick%20as%20thieves. Accessed 6 Nov. 2026.

APA

thick as thieves. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/thick%20as%20thieves

Chicago

"thick as thieves." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/thick%20as%20thieves.

BibTeX
@misc{thick_as_thieves_2026,
  title = {thick as thieves},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/thick%20as%20thieves},
  urldate = {2026-11-06}
}