any person or thing regarded as above criticism or attack
One that is immune from criticism, often unreasonably so: “The need for widespread secrecy has become a sacred cow” (Bulletin of the Atomic Scientists).
Origin of sacred cowFrom the veneration of the cow by the Hindus.
(plural sacred cows)
- (idiomatic) Something which cannot be tampered with, or criticized, for fear of public outcry. A person, institution, belief system, etc. which, for no reason other than the demands of established social etiquette or popular opinion, should be accorded respect or reverence, and not touched, handled or examined too closely.