joined at the hip

listen to the pronunciation of joined at the hip
English - Turkish
(deyim) Etle tırnak gibi, yakın arkadaş, ayrılmaz ikili

Those two are the best of friends, it's as if they're joined at the hip!.

English - English
Closely connected, as in an intimate friendship
(deyim) 1. very closely connected.2. together

1. The two companies have been joined at the hip since their founders went camping together a hundred years ago. 2. The new law would keep unhappy couples joined at the hip for the sake of their children.