Their heightening fears.    From Wordnet, Princeton University. 

The “Attention Trust” folks appear to be interested in heightening awareness of the ways in which our web-activities are consolidated and create an “identity”.    From Wordnik.com.  [Why Top Ten Sources is a Good Thing « Scripting News Annex] Reference

Is that what's kind of heightening tensions around there?.    From Wordnik.com.  [CNN Transcript May 24, 2007] Reference

Even though the kind of heightening environment can last for one or two years, this will enable Cogo to still be able to grow in a slowed-down economy.    From Wordnik.com. Reference

It's called heightening the contradictions.    From Wordnik.com.  [Take This War and Shove It!] Reference

Help, Lord, for here is heightening surge of strife.    From Wordnik.com.  [Freedom, Truth and Beauty] Reference

These last three are colours for heightening compositions.    From Wordnik.com.  [Young's Demonstrative Translation of Scientific Secrets] Reference

The story tells itself without the heightening of artifice.    From Wordnik.com.  [The Legacy of Greece Essays By: Gilbert Murray, W. R. Inge, J. Burnet, Sir T. L. Heath, D'arcy W. Thompson, Charles Singer, R. W. Livingston, A. Toynbee, A. E. Zimmern, Percy Gardner, Sir Reginald Blomfield] Reference

Their eyes were fixed upon David with heightening pleasure and pride.    From Wordnik.com.  [Marcia Schuyler] Reference

A thick cloud settled over the combatants, heightening the dread of battle.    From Wordnik.com.  [Authors of Greece] Reference

The women, especially, were careful in adorning and heightening their charms.    From Wordnik.com.  [Captain Canot or, Twenty Years of an African Slaver] Reference

But now a heightening of the conflict has raised fears of an all-out civil war.    From Wordnik.com.  [The Rise Of Tribal Terror] Reference

"I know it!" she said, with heightening color -- and Elaine said no more, then.    From Wordnik.com.  [In Her Own Right] Reference

For Mr. Oatley it is way of heightening the enjoyment of a sport that he already loved.    From Wordnik.com.  [Horse Trading] Reference

Nearly all the victims have been killed by police bullets, heightening anger against New Delhi.    From Wordnik.com.  [Kashmir separatists meet Indian MPs despite formal boycott] Reference

"You forgot to feed 'em, then?" he said, his color heightening for a moment, but soon subsiding.    From Wordnik.com.  [Journeys Through Bookland, Vol. 7] Reference

Many of the monks display a distinct nationalist spirit, heightening their appeal among the young.    From Wordnik.com.  [The Rock Star Monks] Reference

It appears that 2010 will be the hottest year on record, heightening the urgency to solve climate change.    From Wordnik.com.  [Aron Cramer: Preventing the Next Oil Spill: Do Consumers Hold the Key?] Reference

Most of the other crew-members were there already; Wayne sensed the heightening tenseness on their faces.    From Wordnik.com.  [The Judas Valley] Reference

They have presented reforms to the voters entirely in terms of pain and sacrifice, heightening insecurity.    From Wordnik.com.  [THE GERMANS: A LOT LIKE US] Reference

But even so, 41 hydropower stations were built in this area in four years from 2003, heightening the risks.    From Wordnik.com.  [Rains Punish China's Geologically Vulnerable Areas] Reference

To save strength and give plentiful nourishment, without heightening the fever, must be the constant effort.    From Wordnik.com.  [The Daughters of Danaus] Reference

The four division heads are all in their early 50s and in the running to be the next CEO, heightening emotions.    From Wordnik.com.  [MASTERS OF THE DIGITAL AGE] Reference

And in recent months, Russian-backed separatists inside Georgia have stepped up operations, further heightening tensions.    From Wordnik.com.  [Periscope] Reference

The growing divergence between prospects for economic activity and prices is heightening the dilemma faced by BOE officials.    From Wordnik.com.  [BOE Holds Rates Steady] Reference

Jan Brewer (R) over the state's new immigration law, heightening tensions over the issue ahead of November's midterm elections.    From Wordnik.com.  [Justice Dept. threatens to sue Ariz. sheriff Arpaio in civil rights inquiry] Reference

She saw me as I sauntered by, recognising me with a little nod and smile and a sudden heightening of colour; and came to the door.    From Wordnik.com.  [She and I, Volume 1] Reference

I never failed to receive the timid little bow and smile from Min, with a rosy heightening of her complexion the while -- to which.    From Wordnik.com.  [She and I, Volume 1] Reference

Corp. 's American Airlines rejected a tentative pay deal Tuesday, heightening labor uncertainty at the second-largest U.S. airline.    From Wordnik.com.  [American Union Rejects Contract] Reference

Jan Brewer (R) because of the state's new immigration law, heightening tensions over the issue ahead of November's midterm elections.    From Wordnik.com.  [U.S. may sue Arizona's Sheriff Arpaio for not cooperating in investigation] Reference

Former President Jimmy Carter Mr. Carter himself is heightening comparisons with his own presidency by publishing his White House diaries this week.    From Wordnik.com.  [The Carter-Obama Comparisons Grow] Reference

For all that Cheryl Cole might be heightening the profile of a designer there is no doubt that by wearing the latest trends, she is boosting her own image too.    From Wordnik.com.  [Cheryl Cole's favourite designers are the real winners of X Factor] Reference

The images were so searing for a paradoxical reason: they were mostly vicarious, filtered through the heightening, simplifying (oversimplifying) lens of the media.    From Wordnik.com.  [The Last Hurrah] Reference

But rising openings in the past year haven't reduced unemployment, heightening concerns that the unemployed might lack the skills to fill the jobs that are coming available.    From Wordnik.com.  [Job Openings Rise For First Time Since April] Reference

The backlash in the form of animosity toward Russians is evident among the Adygei, strengthening that minority's own nationalist movement and heightening the danger of civil war.    From Wordnik.com.  [The Real Crisis In Putin's Russia] Reference