Sacrosanct

ˈsækrə(ʊ)ˌsæŋ(k)t

adjective

regarded as too important or valuable to be interfered with

The word 'sacrosanct' stems from Latin 'sacrosanctus,' which combines 'sacer' meaning 'sacred' and 'sanctus' meaning 'holy.' It is often used to describe something that is considered sacred, inviolable, or beyond criticism or change.

"Insects," he said, showing no embarrassment at overhearing them, "are especially sacrosanct."

Dick, Philip K.

Do Androids Dream of Electric Sheep?

—Mother Superior Taraza, Argument in Council The ancient structure in which the Sisterhood secreted its Chapter House, its Archives, and the offices of its most sacrosanct leadership did not just make sounds in the night.

Frank Herbert

Heretics of Dune