Secure from violation or profanation: an inviolable reliquary deep beneath the altar. (adjective)
Impregnable to assault or trespass; invincible: fortifications that made the frontier inviolable. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "inviolable" in a sentence
"Once upon a time we could look to our academic institutions to remain inviolable bastions of objectivity, remaining above the fray, guided by the quest for truth and the truth alone."
"For the political leader the religious doctrines and institutions of his people must always remain inviolable; or else has no right to be in politics, but should become a reformer, if he has what it takes!"
"He kept his word inviolable; was rigorous in the execution of justice; liberal in his gifts; and often merciful to those who offended him."