be (as) thick as thieves



be (as) thick as thieves

To be very close friends. Anna and Beth are together all the time these days—they're as thick as thieves.
See also: thick, thief

Common Names:

NameGenderPronouncedUsage
Chinasa-Western African, Igbo
Titaniatə-TAYN-yə (English), tə-TAHN-yə (English), tie-TAYN-yə (English)Literature
Varnava-Russian, Old Church Slavic
Stana-Czech, Serbian, Croatian
&Thorn;ÓRvaldr-Ancient Scandinavian
Kalynakah-LI-nahUkrainian (Rare)