Impossible to answer or refute; incontrovertible: unanswerable accusations. (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 "unanswerable" in a sentence
"Burke, Porson, Dr. Warburton, and Dr. Farmer, pronounced this piece of criticism convincing and unanswerable; but Dr. Johnson and Steevens would not be convinced, and, moreover, have contrived to answer the _unanswerable_."
"Life is rarely spelled out for anyone … some of life’s greatest questions may remain unanswerable and I love a TV show that respects its audience by not telling them what to think at every turn and lets them find their own interpretation within the structure of the story."
"It is precisely this way of introducing the so-called unanswerable questions about torture that shows Cohen's true leanings."