The 9/11 attacks fall into the category of the "unimagined".    From Wordnik.com.  [Coyote Blog » 2005 » February] Reference

"unimagined" in this sense be a constitutional right?.    From Wordnik.com.  [Reason Magazine - Hit & Run] Reference

Geo-engineering could produce unimagined problems.    From Wordnik.com.  [When Giuliani was growing up] Reference

AUFHAUSER: Well, it's an unimagined amount of wealth.    From Wordnik.com.  [CNN Transcript May 14, 2003] Reference

Other times, though, the disorder taps unimagined talents.    From Wordnik.com.  [CNN Transcript Apr 2, 2008] Reference

This deliberate invasion of our house, is a thing unimagined.    From Wordnik.com.  [The Underground Railroad A Record of Facts, Authentic Narratives, Letters, &c., Narrating the Hardships, Hair-Breadth Escapes and Death Struggles of the Slaves in Their Efforts for Freedom, As Related by Themselves and Others, or Witnessed by the Author.] Reference

That would be three hundred centaur years, an unimagined total.    From Wordnik.com.  [Question Quest]

How new and unimagined the agony of empty hands and stifled wish!.    From Wordnik.com.  [The Atlantic Monthly, Volume 08, No. 49, November, 1861] Reference

In the '80s, TV propelled another pro sport to unimagined prominence.    From Wordnik.com.  [My Favorite Year] Reference

But rivalry propels even the greatest champions to unimagined heights.    From Wordnik.com.  [Is Mickelson Worthy?] Reference

Dangers unimagined in all history gather around a distracted humanity.    From Wordnik.com.  [The Prosperity of Humankind] Reference

Today's stadiums have private, sealed-in boxes of unimagined splendor.    From Wordnik.com.  [Lone Star Stadium of Art] Reference

And the glaring light all around him was the unimagined fire of the Sun!.    From Wordnik.com.  [Pressure]

No! Slavery once destroyed, an unimagined Future dawns upon the republic.    From Wordnik.com.  [The Continental Monthly, Vol. III, No. V, May, 1863 Devoted to Literature and National Policy] Reference

Fortunately, the study didn't uncover huge, unimagined dangers to patients.    From Wordnik.com.  [The End Of The Age Of Estrogen] Reference

And the colors, colors unknown and unimagined in our gray, northern cities.    From Wordnik.com.  [Transport: a Flash-Fiction Triptych] Reference

Ted Koppel lambasts us for fulfilling so many of bin Laden's "unimagined dreams.".    From Wordnik.com.  [Lady Gaga isn't sexy, Twitter killed music writing, the black guide to D.C. and more] Reference

He had been taken from a life of indescribable poverty to one of unimagined wealth.    From Wordnik.com.  [Truly]

The grief that goes to the grave unhealed, may put its trust in unimagined joy to be.    From Wordnik.com.  [McClure's Magazine, Vol. 6, No. 6, May, 1896] Reference

The original is a now tested, previously unimagined flop - how will the sequel be better?.    From Wordnik.com.  [Tina Dupuy: Limbaugh: Viagra for Grand Old and Aging Party] Reference

The technique was the innovative organizing of enterprise on a previously unimagined scale.    From Wordnik.com.  [Life After Death] Reference

She saw they were in a long, deep chamber, from which other openings led to unimagined deeps.    From Wordnik.com.  [The Palace of Darkened Windows] Reference

Our culture, our science, our technology promise unimagined advances and exciting new careers.    From Wordnik.com.  [President At Uc San Diego Commencement] Reference

Bin Laden does not deserve that we, even inadvertently, fulfill so many of his unimagined dreams.    From Wordnik.com.  [Ted Koppel: Nine years after 9/11, let's stop playing into bin Laden's hands] Reference

Trying to explain it away on polls that are based on unimagined hypotheticals doesn't really work.    From Wordnik.com.  [Was The Media Unfair To Hillary? Here's Our Rundown.] Reference

One of the characters turns out to have unimagined depth, and by the end, I was fighting off tears.    From Wordnik.com.  ['Catfish': A Great Story Of Isolation And Connection] Reference

But all I know is, that I seemed suddenly to have found an unexpected and hitherto unimagined self.    From Wordnik.com.  [Recollections With Photogravure Portrait of the Author and a number of Original Letters, of which one by George Meredith and another by Robert Louis Stevenson are reproduced in facsimile] Reference

Besides fielding tough questions, InfoRetriever can alert a busy doctor to unimagined possibilities.    From Wordnik.com.  [Finding The Right Rx] Reference

The 14th Amendment opened the door to what the American experiment could be in ways unimagined by the Founders.    From Wordnik.com.  [Byron Williams: Is This the Year of the 14th Amendment?] Reference

These innovations, in my country and many of your countries, offer humanity a sunlit future of unimagined promise.    From Wordnik.com.  [CNN Transcript Sep 24, 2009] Reference

A rash determination to drive across the Minahasa, and pick up the boat at Menado, involves unimagined difficulties.    From Wordnik.com.  [Through the Malay Archipelago] Reference

We must be forward-looking in our research and development to anticipate and achieve the unimagined weapons of the future.    From Wordnik.com.  [State of the Union Address (1790-2001)] Reference

New technologies, unimagined a decade ago, provide exciting opportunities for some but pose unsettling challenges to others.    From Wordnik.com.  [CNN Transcript - Special Event: Republican Response - January 27, 2000] Reference

The Chatmon creation, in turn, would be appropriated by others, travelling through decades and across cultures unimagined in 1930.    From Wordnik.com.  [Blues Song Is a Decades-Long Music Lesson] Reference

At a time when advances in medical science bring new hope to many, they also give rise to previously unimagined ethical challenges.    From Wordnik.com.  [CNN Transcript Apr 16, 2008] Reference

The new promise of the global economy, the Information Age, unimagined new work, life-enhancing technology -- all these are ours to seize.    From Wordnik.com.  [State of the Union Address (1790-2001)] Reference