wily

Love had already given strength and wiliness to the countess.
Maitre Cornelius|Honore de Balzac
Who knowing their wiliness, saith to them: Why tempt you me?
The Bible, Douay-Rheims Version|Various
I will watch with the wiliness of a snake, that I may sting with its venom.
Frankenstein|Mary W. Shelley
"What the brethren wanted in strength they had in wiliness," he says.
The Beginners of a Nation|Edward Eggleston.

It depends a lot upon the wiliness of the fox he's in pursuit of.
The Riddle of the Spinning Wheel|Mary E. Hanshew

British Dictionary definitions for wiliness

wily

/ (ˈwaɪlɪ) /

adjective wilier or wiliest

characterized by or proceeding from wiles; sly or crafty

Derived Formswiliness, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for wiliness

wily

adj.

c.1300, from wile + -ly (1). Related: Wiliness.