sly

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a sly dog

Someone who, through cunning, devious, or dishonest means, achieves a fortuitous outcome. What a sly dog, he managed to get a copy of the test so he could memorize the answers ahead of time!
See also: dog, sly

on the sly

Fig. secretly and deceptively. She was stealing little bits of money on the sly. Martin was having an affair with the maid on the sly.
See also: on, sly

*sly as a fox

 and *cunning as a fox
Cliché smart and clever. (*Also: as ~.) My nephew is as sly as a fox. You have to be cunning as a fox to outwit me.
See also: fox, sly

on the sly

secretly She's been going out with him on the sly.
See also: on, sly

on the sly

Furtively, secretly, as in She's always eating cookies on the sly. The adjective sly, which means "cunning" or "crafty," is here used as a noun. [c. 1800]
See also: on, sly

on the sly

mod. secretly and deceptively. She was stealing little bits of money on the sly.
See also: on, sly

sly

mod. excellent; cool. That is really a sly jacket you got there.

on the sly

In a way intended to escape notice: took extra payments on the sly.
See also: on, sly
References in periodicals archive ?
In the slier "Dance of Summer," Brenner pressed her wrist to forehead and cocked her eyes like a proud diva.
Old school friends, booze-up pals, IRA comrades, hangers-on, admirers, and ex-lovers surrounded him on every street, in every pub, feeding him whiskey, bits of sly gossip, slier malice, thumps on the back.
Currently Slier is director of communication at the Washington, D.
Norton proves himself a major and highly versatile talent here; given a slier screenplay (Steve Shagan and Ann Biderman awkwardly adapted William Diehl's novel), this could have been one of the great thriller roles of all time.
Cornish and Slier discovered that the large initiators cause plants to make rubber up to six times faster than the small ones.
But a slier set of concerns emerges when one considers these weavers, busy with their "women's work," in relation to the pioneering figure of d'Harnoncourt herself.
Century 21 Construction of Clifton, NJ has completed a 70,000 square-foot expansion of Slier Distributing Company's distribution center in Totowa, NJ, announced.
Slier, Paul Lynde often seemed to be for kids, the ur-PeeWee Herman.