sac·ro·sanct 
/ˈsækroʊˌsæŋkt/ adjective
/ˈsækroʊˌsæŋkt/ adjective [more sacrosanct; most sacrosanct] formal : too important and respected to be changed, criticized, etc.
▪ the government's most sacrosanct institutions ▪ The tradition is regarded as sacrosanct.
▪ the government's most sacrosanct institutions ▪ The tradition is regarded as sacrosanct.
