in ‧ vi ‧ o ‧ la ‧ ble /ɪnˈvaɪələb ə l/ BrE AmE adjective formal
[ Date: 1400-1500 ; Language: French ; Origin: Latin inviolabilis , from violare 'to violate' ]
an inviolable right, law, principle etc is extremely important and should be treated with respect and not broken or removed
—inviolability /ɪnˌvaɪələˈbɪləti, ɪnˌvaɪələˈbɪlɪti/ noun [uncountable] :
the inviolability of the country’s borders