be carved in stone

To be made permanent, typically of a plan or idea. We might get brunch next weekend, but nothing is carved in stone yet.

be carved/set in stone

if an arrangement, a plan, or a rule is set in stone, it is completely fixed so that it cannot be changed (usually negative) The rules aren't set in stone; they can be altered to suit changing circumstances. These are just a few ideas to be discussed - nothing is carved in stone.

Common Names:

Name	Pronounced	Usage
Tanisha	tə-NEE-shə	African American
Simoni	-	Georgian
Anabelle	AN-ə-bel	English (Modern)
Kolos	KO-losh	Hungarian
Mamadou	-	Western African
Conway	KAHN-way	English