Adjective : It is imperative that we leave.    From Dictionary.com. 

Noun : It is an imperative that we help defend friendly nations.    From Dictionary.com. 

There is a terrible intensity and immediate imperativeness about this call.    From Wordnik.com.  [Human Traits and their Social Significance] Reference

Her voice raised itself in the last few words to an almost hysterical imperativeness.    From Wordnik.com.  [A Daughter of To-Day] Reference

They all have the most advantageous platform to push the imperativeness of help in Darfur.    From Wordnik.com.  [Lean Left » Blog Archive » Save Darfur] Reference

Olga spoke with a fierce imperativeness as she saw Diana sway uncertainly and her face whiten.    From Wordnik.com.  [The Splendid Folly] Reference

Marcia longed, with almost the imperativeness of a longing to sneeze, to allude directly to Stephen.    From Wordnik.com.  [Author! Author! » Blog Archive » Another writerly truism gets the Anne treatment] Reference

The imperativeness of the investigation is inversely analogous to the IQ of the indemnity congress preauthorization clerk.    From Wordnik.com.  [Archive 2009-08-01] Reference

As they realize the imperativeness and urgency in achieving the outlined goal, they reach over and try to wake others still sleeping on this mission.    From Wordnik.com.  [Scrutinizing NAACP's Burial of the N-word] Reference

The indignation of Emily was roused, and she spoke with a flashing eye, and with an imperativeness which her wrongs alone could have called to her aid.    From Wordnik.com.  [Hatchie, the Guardian Slave; or, The Heiress of Bellevue] Reference

Every article of living is demanded with an imperativeness and over an extent of territory which set at once additional thousands to the task of production.    From Wordnik.com.  [The Atlantic Monthly, Volume 17, No. 100, February, 1866] Reference

'And your reasons?' he said, with quick imperativeness.    From Wordnik.com.  [Robert Elsmere] Reference

” For such is the imperativeness of a command from the Order.    From Wordnik.com.  [The Trance of Cessation. II. The Doctrine.] Reference

” For such is the imperativeness of a summons from The Teacher.    From Wordnik.com.  [The Trance of Cessation. II. The Doctrine.] Reference

It has no note of authority and imperativeness because it has no roots.    From Wordnik.com.  [Crosswalk.com - Home] Reference

The man's voice leaped to a higher pitch and was sharp with imperativeness.    From Wordnik.com.  [All Gold Canyon] Reference

"Yes, to-night; but not every night," she added, with playful imperativeness.    From Wordnik.com.  [Fairy Fingers A Novel] Reference

I never forgave him any of his behavior after his imperativeness on that occasion.    From Wordnik.com.  [Life of Harriet Beecher Stowe Compiled From Her Letters and Journals by Her Son Charles Edward Stowe] Reference

"What's got into you, anyway?" she demanded, with a lame attempt at imperativeness.    From Wordnik.com.  [When God Laughs: and other stories] Reference

"Will you send her back as soon as possible?" she asked with her old imperativeness.    From Wordnik.com.  [Five Little Peppers Midway] Reference

She felt to the full all the imperativeness of the motives which urged Will's conduct.    From Wordnik.com.  [Middlemarch] Reference

In at it also, and rising superior to all these in imperativeness and purpose, came the voice of.    From Wordnik.com.  [The History of Sir Richard Calmady A Romance] Reference

Law comes saying 'Do this,' and our consciences respond to the imperativeness of the obligation.    From Wordnik.com.  [Expositions of Holy Scripture St. John Chapters I to XIV] Reference

In it was all the imperativeness of reproof and command and all the solicitous insistence of love.    From Wordnik.com.  [Jerry of the Islands] Reference

KSK has to first convince Najib of the imperativeness for the government to come clean of this mess.    From Wordnik.com.  [Planet Malaysia] Reference

The imperativeness to do this is much more acute than previously thought by either of these two leaders.    From Wordnik.com.  [Asian Tribune] Reference

To remember the sacrifices of these martyrs and discuss the imperativeness of national integrity and peace.    From Wordnik.com.  [The Hindu - Front Page] Reference

The very homeliness and obviousness of the duty causes us often to lose sight of its imperativeness and necessity.    From Wordnik.com.  [Expositions of Holy Scripture: Romans Corinthians (To II Corinthians, Chap. V)] Reference

If on that subject he had only exercised the imperativeness customary with him on others, all might have been revealed.    From Wordnik.com.  [A Pair of Blue Eyes] Reference

Both had been troubled and roused, and they were drawing together with the sharpness and imperativeness of uniting elements.    From Wordnik.com.  [The Game] Reference

Elsmere bore his catechism with perfect temper, though Newcome's manner had in it a strange and almost judicial imperativeness.    From Wordnik.com.  [Robert Elsmere] Reference

There was an urgency and imperativeness in the man's tones which made it clear enough that there was no time for investigation.    From Wordnik.com.  [Turned Adrift] Reference

"This imperativeness would enforce the assent even of an inorganic mass were it capable of following associations of identities.".    From Wordnik.com.  [The Crowd: A Study of the Popular Mind] Reference

It is something almost awful to think of the multiplicity, and the variety, and the imperativeness of the raging desires which every human soul carries about within it.    From Wordnik.com.  [Expositions of Holy Scripture Psalms] Reference

A social point of view, certain scientific developments are of more urgency and imperativeness than others.    From Wordnik.com.  [Human Traits and their Social Significance] Reference

All the animal functions, in common with all the higher functions, have, as thus understood, their imperativeness. ".    From Wordnik.com.  [Natural Law in the Spiritual World] Reference

'Society, amusement, flirtation, are one thing,' she replied with judicial imperativeness, 'marriage is another.    From Wordnik.com.  [Robert Elsmere] Reference