a sacred cow

a belief or system that is treated with much respect and is not usually criticized The British legal system remains a sacred cow, despite increasing evidence that serious mistakes have been made.

Common Names:

Name	Pronounced	Usage
Lonnie	LAHN-ee	English
Petru	-	Romanian, Corsican, Old Church Slavic
Alycia	ə-LIS-yə, ə-LIS-ə, ə-LISH-ə	English
Gillian	JIL-ee-ən, GIL-ee-ən	English
Nance	[næns]
Francesc	frən-SESK	Catalan