“Dumb's a sly dog.”
Colley Cibber
“A sly rogue is often in good dress”
Irish Sayings
“He's tough, ma'am, tough, is J. B. Tough and devilish sly!”
Charles Dickens
“In the meantime, on the sly,Something's going on up high.Max has shown some foresight here,For he brought his fishing gear.”
Wilhelm Busch
“People were doing it on the sly anyway,”
Carlos Gomez
“There's a reason they are called sly as a fox.”
Cathy Marco
“Charlie got this sly look on his face, ... And then he said, 'I want you to put my ashes on all the original 315 peaks I climbed.'”
Richard Kane