unanswerable

[ uhn-an-ser-uh-buh l, -ahn- ]

/ ʌnˈæn sər ə bəl, -ˈɑn- /

not capable of being answered; not having a known or discoverable answer: an unanswerable question.

not open to dispute or rebuttal; irrefutable; conclusive: an unanswerable proof.

Origin of unanswerable

First recorded in 1605–15; un-¹ + answerable

un·an·swer·a·ble·ness, noun un·an·swer·a·bly, adverb

Like most things Grammy-related, it is an unanswerable question.

Beyonce Gave the Best Grammy Awards Performance (And 8 More That Were Pretty Good, Too) |Kevin Fallon |January 27, 2014 |DAILY BEAST
The unanswerable questions my twins often ask me, such as, “Dad, why is your ear here?”

Ma Jian: How I Write |Noah Charney |June 12, 2013 |DAILY BEAST
This is, in some sense, an unanswerable existential question.

"Tax Breaks for Corporate Jets": The Non-Issue at the Heart of the Presidential Agenda |Megan McArdle |April 10, 2013 |DAILY BEAST
MacLaine, avid spiritualist and searcher, is comfortable with the unanswerable.

Shirley MacLaine on ‘Bernie,’ ‘Downton Abbey,’ and Her Lifetime Achievments |Lorenza Muñoz |April 25, 2012 |DAILY BEAST

They do not inspire us into unquestioning loyalty; they sadden us and provoke the unanswerable existential question: Why?

A Very Good War |Bob Kerrey |March 10, 2010 |DAILY BEAST
This argument was unanswerable, so Nelly made no reply, and Larry went on.

The Golden Dream |R.M. Ballantyne
“But yet, if it wasn't true, he wouldn't dare,” was the unanswerable reply.

The Wilderness Trail |Frank Williams
I mumbled some politeness in answer to his unanswerable opening, and started the one possible topic of the weather.

The Jervaise Comedy |J. D. Beresford
He shrugged his shoulders, unable apparently to gainsay this unanswerable argument.

A Bride of the Plains |Baroness Emmuska Orczy
At the conclusion of this speech every man and child felt that it was unanswerable.

Abraham Lincoln, Volume 2 (of 2) |William H. Herndon

unanswerable

/ (ʌnˈɑːnsərəbəl) /

incapable of being refuted

(of a question) not admitting of any answer

unanswerableness, noun unanswerably, adverb