be set in concrete

if an arrangement, a plan or a rule is set in concrete, it is completely fixed so that it cannot be changed (usually negative) We've drawn up some rough guidelines - they're by no means set in concrete.

Common Names:

Name	Pronounced	Usage
Julio	HOO-lyo (Spanish), ZHOO-lyoo (Portuguese)	Spanish, Portuguese
Haley	HAY-lee	English (Modern)
Fionnuala	-	Irish, Irish Mythology
Gittan	GIT-tahn	Swedish
Alexius	-	Ancient Greek (Latinized)
Davidu	-	Old Church Slavic