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
ClaudeKLOD (French), KLAWD (English)French, English
XesÚS-Galician
Watts[wɔts]
ŠTĚPÁNka-Czech
Mercurius-Roman Mythology
Alasdair['æləsdə]