As thick as thieves
Best and as thick as thieves are semantically related. In some cases you can use "Best" instead an adjective phrase "As thick as thieves".
Best
Best adjective - (superlative of `good') having the most positive qualities.
As thick as thieves and best are semantically related. Sometimes you can use "As thick as thieves" instead an adjective "Best".
Mutual synonyms
Cite this Source
Best and As thick as thieves. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/as_thick_as_thieves/best
As thick as thieves & Best. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/as_thick_as_thieves/best>.
Best or As thick as thieves. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/as_thick_as_thieves/best.