Long thought to be an impossibly difficult operation.    From Wordnet, Princeton University. 

He is impossibly idealistic.    From Wordnet, Princeton University. 

Adjective : an impossible assignment. ,an impossible situation. ,an impossible plan.    From Dictionary.com. 

It is magnificently if rustically beautiful with red clay earth covered in impossibly green foliage.    From Wordnik.com.  [Chiapas as Bubba - Imperfection Personified] Reference

@impossibly (PS: The whole thing will be archived at that url shortly, so you can skim through what you missed.) in reply to impossibly #.    From Wordnik.com.  [Crushing Krisis] Reference

CHETRY: Well, the "Times of London" called her impossibly glamorous.    From Wordnik.com.  [CNN Transcript Mar 28, 2008] Reference

Simna ibn Sind was his gnomic apprentice, wielding a sword impossibly larger than himself.    From Wordnik.com.  [Into the Thinking Kingdoms]

I thought one early response was "impossibly" appropriate and delightful.    From Wordnik.com.  [Josh Sommers: smoke and mirrors will get you... a wide grin] Reference

At first Flinx thought they were some kind of impossibly attenuated snakes.    From Wordnik.com.  [Mid Flinx]

Nor was it some kind of impossibly complex scheme Mr. Andrews was caught up in.    From Wordnik.com.  [The New Soft-Bitten Journalists] Reference

A BMW X5 in impossibly shiny Black.    From Wordnik.com.  [Friday Night In Out-Patients « POLICE INSPECTOR BLOG] Reference

While that seems impossibly high, the dollars add up.    From Wordnik.com.  [Aliens Invade America!] Reference

If all this sounds impossibly tangled, don't despair.    From Wordnik.com.  [A Fresh Look at Rotten Marriages] Reference

You dared to buy Net stocks at prices impossibly high.    From Wordnik.com.  [Investing, After The Bubble Making It Back] Reference

Sentences are either impossibly short or impossibly long.    From Wordnik.com.  [The Infamous Martin Amis] Reference

She is only 26, impossibly young to be cutting diva teeth.    From Wordnik.com.  [The Diva Goes Barefoot] Reference

This is a fairy tale, and so it has an impossibly happy ending.    From Wordnik.com.  [Reports From The Heartland] Reference

Perhaps your boss is a brilliant visionary but impossibly disorganized.    From Wordnik.com.  [Five Tricks To Manage Your Manager] Reference

We're not a nation of spoiled gripers with impossibly high expectations.    From Wordnik.com.  [Dissing Customers] Reference

Meanwhile we glorify million-dollar actors partaking in impossibly staged battles.    From Wordnik.com.  [Derek Beres: Christoper Nolan's False Start] Reference

Women were fed up with being compared to impossibly beautiful women and coming up short.    From Wordnik.com.  [A Taste For Competition] Reference

On the other hand, Obama has only himself to blame for setting expectations impossibly high.    From Wordnik.com.  [Robert Gibbs keeps jabbing the left] Reference

To many investors, it sounds impossibly exotic to own shares in Malaysia, Thailand and Brazil.    From Wordnik.com.  [The Peso Shock: A Silver Lining] Reference

Doesn't it realize that this leaves the remaining troops in an impossibly stressful situation?.    From Wordnik.com.  [Letters To The Magazine] Reference

Early on in his work, Bacon transposed Picasso's impossibly distorted surrealist forms directly.    From Wordnik.com.  [PERISCOPE] Reference

When did our ideal change from natural beauty to overly retouched and impossibly perfect images?.    From Wordnik.com.  [Katherine Schwarzenegger: Defining Beauty] Reference

King Vidor's version is the most beautiful and concise adaptation of this impossibly huge book. 3.    From Wordnik.com.  [Movies: Mike Newell] Reference

OK, expectations were impossibly high when Michelle stepped into the role of first lady in January.    From Wordnik.com.  [How Will Michelle Obama Make Her Mark?] Reference