He looked at his new customer shiftily.    From Wordnet, Princeton University. 

Adjective, : a shifty look.    From Dictionary.com. 

"Upgraded," replied Magnus, perhaps a little shiftily.    From Wordnik.com.  [A Body In The Bath House]

“What do you mean?” she asked shiftily, lowering her hands.    From Wordnik.com.  [The Little Lady Agency and the Prince] Reference

Puzzled, Monty smiles shiftily: Well, like I said, you could tell.    From Wordnik.com.  [Caught in the Crossfire: Adrian Scott and the Politics of Americanism in 1940s Hollywood] Reference

McBride tittered nervously, and, shiftily, answered over his shoulder.    From Wordnik.com.  [Closing Time] Reference

He was getting nervous: He took a step back and looked shiftily from side to side.    From Wordnik.com.  [The Body Ricardo] Reference

"We're not really here, you know," Pawarce told him, looking round himself shiftily.    From Wordnik.com.  [The Grand Wheel]

Natalie did not take her scornful eyes from his face, and Boris at last looked shiftily away.    From Wordnik.com.  [High Noon A New Sequel to 'Three Weeks' by Elinor Glyn] Reference

We were confronting aftershocks, seismic activity that continued hourly, shiftily, as we were conducting the rescue effort.    From Wordnik.com.  [CNN Transcript Aug 14, 2007] Reference

The door was then solemnly thrown open and at Philip Philipovich's request Bormenthal led in Sharikov, who glanced shiftily around.    From Wordnik.com.  [The Heart Of A Dog]

While we admitted it shiftily, pretending we had of course been planning to mention it, the senator laid aside my botany and brought out a map.    From Wordnik.com.  [Two For The Lions]

His little eyes wandered shiftily up and down the street.    From Wordnik.com.  [Sketches in Lavender, Blue and Green] Reference

Jabez looked round shiftily, and said in his unctuous voice.    From Wordnik.com.  [Moon of Israel] Reference

He looked round shiftily, and said, "I mean no harm by the girl.".    From Wordnik.com.  [The Manxman A Novel - 1895] Reference

She looked around shiftily, her eyes scanning the street for trouble.    From Wordnik.com.  [The Independent - Frontpage RSS Feed] Reference

He felt them pass shiftily across his face with a sense of shrinking repulsion.    From Wordnik.com.  [In the Wake of War] Reference

In and out of the hive long black robber bees smeared with honey fly timidly and shiftily.    From Wordnik.com.  [War and Peace] Reference

They looked bemused and I crept through the rest of the class shiftily looking from side to side.    From Wordnik.com.  [ICT in my Classroom] Reference

He mopped his face with a big, red handkerchief, and looked shiftily from one boyish face to the other.    From Wordnik.com.  [The Rival Campers Ashore The Mystery of the Mill] Reference

According to Jackson's family, Murray later betrayed his guilt by behaving shiftily at the medical centre.    From Wordnik.com.  [Tonight] Reference

According to Jackson's family, Dr Murray later betrayed his guilt by behaving shiftily at the medical centre.    From Wordnik.com.  [Home | Mail Online] Reference

And the Tory leader's shiftily selling a big fat juicy Conservative con - the idea that we'd receive a cost-free bung.    From Wordnik.com.  [mirror.co.uk - Home] Reference

He stood before his sister and his cousin, moving his eyes shiftily from one to the other, rubbing his hands nervously together.    From Wordnik.com.  [Mistress Wilding] Reference

He stood squarely in front of her with a persistence that forced her to turn shiftily away with a pretence of looking at the clock.    From Wordnik.com.  [From One Generation to Another] Reference

Play roulette posteriori Caputo feel shiftily prowess.    From Wordnik.com.  [The Volokh Conspiracy » Anarchists debating] Reference

“Close as a clam, that’s me,” said Gervase shiftily, because he could not quite remember anything he had said the evening before.    From Wordnik.com.  [Death of a Scriptwriter]

She looked at me shiftily.    From Wordnik.com.  [In the Dark about AFTERdark | Mind on Fire] Reference

“No,” said Macbean shiftily.    From Wordnik.com.  [Death of a Dentist]

Lo, the paradigm doth shift most shiftily.    From Wordnik.com.  [Going Old School (Sometimes)] Reference

He eyed his mother and brothers shiftily.    From Wordnik.com.  [The Historical Nights' Entertainment First Series] Reference

John looked at him, looked away shiftily.    From Wordnik.com.  [Wraithbait] Reference

Rodney blinked and then looked shiftily away.    From Wordnik.com.  [Wraithbait] Reference

She looked at me, at once shiftily and sharply.    From Wordnik.com.  [Nights in London] Reference

Well and shiftily answered, thou ragged Proteus.    From Wordnik.com.  [The Complete Works of Whittier] Reference

He looked away, shiftily.    From Wordnik.com.  [post-gazette.com - News] Reference

"I see," he began shiftily.    From Wordnik.com.  [Rose O'Paradise] Reference