What she said to him there I cannot tell, but by and by they came back to the hotel, the sneakiest-looking creatures you ever set your two eyes on.
"Phemie Frost's Experiences"
Ann S. Stephens
He's the craftiest, sneakiest, most underhand skunk in the Valley.
"The Spoilers of the Valley"
Robert Watson
"Anything Miss Herbert may have told you was certainly in confidence, and to go and blab it over the school seems to me the meanest, sneakiest trick I've ever heard of!
"The Princess of the School"
Angela Brazil