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.
See how Frank Herbert and Philip K. Dick use "sacrosanct", with its meaning, pronunciation and real book examples.
Examples from books
"Insects," he said, showing no embarrassment at overhearing them, "are especially sacrosanct."
Philip K. Dick
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