He looked at her frowningly.    From Wordnet, Princeton University. 

"frowningly" upon you, leave him to me, and he shall have ample satisfaction.    From Wordnik.com.  [Bibliomania; or Book-Madness A Bibliographical Romance] Reference

Regarding Lady Hester frowningly, Maidie shrugged.    From Wordnik.com.  [Gatlinburg] Reference

He turned right round and looked at her frowningly.    From Wordnik.com.  [You Don't Take Names] Reference

For a moment or two the ex-soldier eyed him frowningly.    From Wordnik.com.  [Through Russia] Reference

Gilder frowningly scrutinised the window, and then said.    From Wordnik.com.  [The Complete Father Brown] Reference

"Where did you go so suddenly?" demanded Hippy frowningly.    From Wordnik.com.  [Grace Harlowe's Overland Riders Among the Kentucky Mountaineers] Reference

Millie paused, frowningly contemplating the weirdness of it.    From Wordnik.com.  [The Lighthouse]

Billy stared frowningly out on the vivid street ahead of him.    From Wordnik.com.  [The Palace of Darkened Windows] Reference

The King, having frowningly considered a little, called to him.    From Wordnik.com.  [A Child's History of England] Reference

She tried a pen frowningly, and Billy jumped to offer another.    From Wordnik.com.  [The Palace of Darkened Windows] Reference

‘The subject of the painting …?’ she prompted frowningly.    From Wordnik.com.  [Pregnant by the Millionaire]

He paused, and looked at Craven frowningly while he warmed his hands.    From Wordnik.com.  [The Shadow of the East] Reference

Barry stared at the man for a moment, then frowningly perused the note.    From Wordnik.com.  [Gold Out of Celebes] Reference

He plunged his hands deep in his pockets and bowed his head frowningly.    From Wordnik.com.  [Cord and Creese] Reference

Wilmer squeezed a tube on his palette and regarded the color frowningly.    From Wordnik.com.  [Different Girls] Reference

She looked at him for an instant, and then said frowningly, ‘I won’t.    From Wordnik.com.  [Little Dorrit] Reference

At the end of it Radulfus peered at him long and frowningly, and pondered.    From Wordnik.com.  [The Leper of Saint Giles]

Madame Goethe looked at us with a smile; our governess, however, frowningly.    From Wordnik.com.  [Napoleon and the Queen of Prussia] Reference

General Petain gazed frowningly at Hal and Chester for perhaps a full minute.    From Wordnik.com.  [The Boy Allies at Verdun Or, Saving France from the Enemy] Reference

When she saw a tall man staring somewhat frowningly at her she sat up suddenly.    From Wordnik.com.  [Mary Rose of Mifflin] Reference

The stranger regarded him frowningly, then shifted his rifle into his right hand.    From Wordnik.com.  [Grace Harlowe's Overland Riders Among the Kentucky Mountaineers] Reference

To this Ossip made no reply, but gazed frowningly at his dripping, half-clad men.    From Wordnik.com.  [Through Russia] Reference

Rostov looked frowningly at the Frenchmen, bowed reluctantly, and remained silent.    From Wordnik.com.  [War and Peace] Reference

Sonia studied her frowningly, taking account of her flushed cheeks and reddened mouth.    From Wordnik.com.  [Rome's Revenge]

"Just one minute more I give you," stated Mollie, regarding her wrist watch frowningly.    From Wordnik.com.  [The Outdoor Girls at the Hostess House Or, doing their best for the soldiers] Reference

Rachel, hurriedly, looking frowningly at a flower which she was twirling in her fingers.    From Wordnik.com.  [Wylder's Hand] Reference

Father Brown looked up, and frowningly scrutinised a dark outline at the gas-lit window.    From Wordnik.com.  [The Father Brown Omnibus]

The Abbesse being very angry; and not understanding what she meant, frowningly answered.    From Wordnik.com.  [The Decameron] Reference

Standing beside Grace on the veranda, she was engaged in peering frowningly down the street.    From Wordnik.com.  [Grace Harlowe's Golden Summer] Reference

"I got to have a good look at him, for once," said Penrod, as he stared frowningly at Whitey.    From Wordnik.com.  [Short Stories of Various Types] Reference

Fondard turned over the final page and then lowered the plans to stare frowningly at the window.    From Wordnik.com.  [The Mistaken Wife] Reference

Next morning a man walks into their camp — a pale, haggard man who looks at them frowningly, piercingly.    From Wordnik.com.  [The Growth of the Soil] Reference

“You shall know me hereafter,” said the stranger, frowningly; and he drew from beneath his garment a dagger!.    From Wordnik.com.  [The Italian] Reference

Ay; I never see a joke, 'Mr. Honeythunder frowningly retorted.    From Wordnik.com.  [The Mystery of Edwin Drood] Reference

"Oh, that was only a part of her guile," said Ackland, frowningly.    From Wordnik.com.  [Taken Alive] Reference

Reassured again on this point, she looked frowningly at the doctor.    From Wordnik.com.  [The Iron Woman] Reference

He stalked out of the office, leaving Corrigan looking after him, frowningly.    From Wordnik.com.  ['Firebrand' Trevison] Reference

Mr. Schofield, reading the evening paper, glanced frowningly over it at his offspring.    From Wordnik.com.  [Penrod] Reference