unassailable

[ uhn-uh-sey-luh-buh l ]

/ ˌʌn əˈseɪ lə bəl /

not open to attack or assault, as by military force or argument: unassailable fortifications; unassailable logic.

not subject to denial or dispute: Shakespeare's genius gives his works an unassailable position in world literature.

Origin of unassailable

1590–1600; un-¹ + assailable

un·as·sail·a·bil·i·ty, un·as·sail·a·ble·ness, noun un·as·sail·a·bly, adverb

But its hope for a better future and its expressed faith in God and the children of God is unassailable.

Martin Luther King’s Nobel Speech Is an Often Ignored Masterpiece |Malcolm Jones |October 16, 2014 |DAILY BEAST
It might have been used as confirmation that a unique and cozy “special relationship” between the two nations was unassailable.

Blood and War: The Hard Truth About ‘Boots on the Ground’ |Clive Irving |September 22, 2014 |DAILY BEAST
“His party credentials are unassailable,” says veteran GOP strategist Ralph Reed.

The Reinvention of Ted Cruz |Michelle Cottle |March 12, 2013 |DAILY BEAST
Bibi Netanyahu called for an early vote from an apparent position of unassailable strength.

Israel’s Election Could Be Bad News for Netanyahu |Robert Shrum |January 23, 2013 |DAILY BEAST

He said that the Americans talk about an Israeli strike “almost as a given—as a clear, unassailable fact.”

Is There Really a U.S. Rift With Israel? |Dan Raviv, Yossi Melman |July 28, 2012 |DAILY BEAST
He began to believe what was commonly said of her, that her virtue, physical and ethical, was unassailable.

The Plunderer |Roy Norton
Trella did not want to believe Jakdane was right, but his reasoning was unassailable.

The Jupiter Weapon |Charles Louis Fontenay
This is indeed a most effective position: it exasperates, while it is unassailable.

Pagan Papers |Kenneth Grahame
And such a marriage would be perfectly legal and unassailable?

Pearl of Pearl Island |John Oxenham
For three months she held her ground as the martyr of her religion, an unassailable position.

Great Ralegh |Hugh De Selincourt

unassailable

/ (ˌʌnəˈseɪləbəl) /

not able to be attacked

undeniable or irrefutable

unassailableness, noun unassailably, adverb