The intentness of his gaze.    From Wordnet, Princeton University. 

She faces the camera with the kind of intentness that went with a slower photographic process.    From Wordnik.com.  [Antiwar.com Original] Reference

The anxiety vanished in a moment, but not the intentness.    From Wordnik.com.  [The Invader A Novel] Reference

She looked carelessly at first, and then with intentness.    From Wordnik.com.  [Mrs. Day's Daughters] Reference

I could not help but feel impressed at his grim intentness.    From Wordnik.com.  [Astounding Stories of Super-Science February 1930] Reference

"What is it, Cyril?" looking at him with sudden intentness.    From Wordnik.com.  [April's Lady A Novel] Reference

Goody Liu scrutinised Lin Tai-yü with intentness for a while.    From Wordnik.com.  [Hung Lou Meng, Book II Or, the Dream of the Red Chamber, a Chinese Novel in Two Books] Reference

But she turned her head and looked at me with a curious intentness.    From Wordnik.com.  [The La Chance Mine Mystery] Reference

Yet she listened with desperate intentness, as Hodges went on speaking.    From Wordnik.com.  [Heart of the Blue Ridge] Reference

Carol leaned forward and looked at her handsome sister with sudden intentness.    From Wordnik.com.  [Prudence Says So] Reference

Ashe was surveying him with an odd intentness which Ross could not understand.    From Wordnik.com.  [The Time Traders] Reference

From beneath the brim of his old sailor hat he looked on with solemn intentness.    From Wordnik.com.  [The Pleasant Street Partnership A Neighborhood Story] Reference

Then, his gaze concentrating suddenly, he stared at Tony with an odd intentness.    From Wordnik.com.  [The Vision of Desire] Reference

"I cannot believe you are not conscientious," she said, with a frown of intentness.    From Wordnik.com.  [Ideala] Reference

For the past two weeks, he had watched her with an intentness that was embarrassing.    From Wordnik.com.  [The Scarlet Feather] Reference

Her color was high, and her face despite a grim intentness indicated keen satisfaction.    From Wordnik.com.  [Other People's Business The Romantic Career of the Practical Miss Dale] Reference

As Plutina watched with affrighted intentness, the man finished driving the second stake.    From Wordnik.com.  [Heart of the Blue Ridge] Reference

Pao-yü quickly stood still, and gazed, with all intentness, at the landscape for a time.    From Wordnik.com.  [Hung Lou Meng, Book II Or, the Dream of the Red Chamber, a Chinese Novel in Two Books] Reference

Doubts and surmises crept into Pao-yü's mind, so halting at once, he listened with intentness.    From Wordnik.com.  [Hung Lou Meng, Book II Or, the Dream of the Red Chamber, a Chinese Novel in Two Books] Reference

Two had alighted within the palms of her hands and were gazing toward her with serious intentness.    From Wordnik.com.  [The Girl Scouts in Beechwood Forest] Reference

There was a strange intentness in Fairy's fine eyes as she studied the twins on the floor at her feet.    From Wordnik.com.  [Prudence Says So] Reference

He looked hard at her hand, and something violent in his intentness made her clutch the side of the chair.    From Wordnik.com.  [The Coast of Chance] Reference

Penny, who was standing against the wall, just inside the doorway, spoke up, staring at Flora with frowning intentness.    From Wordnik.com.  [Murder at Bridge] Reference

But after a moment another expression mixed with it, sharpened it, and fastened upon her with an incredulous intentness.    From Wordnik.com.  [The Coast of Chance] Reference

He gazed at the young girl by his side, with an intentness that would doubtless have embarrassed her had she perceived it.    From Wordnik.com.  [Blackwood's Edinburgh Magazine, Volume 62, No. 382, October 1847] Reference

He had started straight in his chair when she mentioned Beth Caldwell, and was staring at her now with puzzled intentness.    From Wordnik.com.  [The Beth Book Being a Study of the Life of Elizabeth Caldwell Maclure, a Woman of Genius] Reference

His hard blue eyes never left George's, searching with microscopic intentness for the faintest sign of the Lani's intentions.    From Wordnik.com.  [The Lani People] Reference

I looked upon the medallion with great intentness, for I felt convinced the mystery of the night was connected inseparably with it.    From Wordnik.com.  [Border Ghost Stories] Reference

The intentness of her gaze fidgeted the old lady, who would look up suddenly every now and then and ask her what she was staring at.    From Wordnik.com.  [The Beth Book Being a Study of the Life of Elizabeth Caldwell Maclure, a Woman of Genius] Reference

In the cold white moonlight the Arab's face was like a piece of beautiful carved bronze, still and terrible in its fixed intentness.    From Wordnik.com.  [The Shadow of the East] Reference

"What did you see out there?" asked Harvey Spencer, with the sharp intentness which he had learned from his maturing city experience.    From Wordnik.com.  [Little Lost Sister] Reference

Once again she offered her hand, and he took it gravely, looking with sober intentness into her face, a little pale in the moonlight.    From Wordnik.com.  [Prudence Says So] Reference

For a moment they looked at each other, her eyes wide with fright, his narrowed to a glare under the terrible intentness of his brows.    From Wordnik.com.  [The Coast of Chance] Reference

And, as the two passed on, John's eyes followed them with an intentness which would have won a clearer answer from them had they seen it.    From Wordnik.com.  [Incidents of the War: Humorous, Pathetic, and Descriptive] Reference

Next the figure half raised, moved straight and steadily in his direction, noiselessly, but with terrible intentness, direct towards him.    From Wordnik.com.  [Frontier Boys in Frisco] Reference

He sat down on the bench, fumbled with the pile of tape disks, knowing that the other two were watching him with almost hostile intentness.    From Wordnik.com.  [The Defiant Agents] Reference