Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Cunning

Cunning as a fox.
—Anonymous

Cunning as the counterfeit of wisdom.
—Anonymous

Cunning as the serpent of old Nile.
—Anonymous

Cunning as two Genoese.
—Honoré de Balzac

Cunning as a witch.
—Charlotte Brontë

Cunning as Satan.
—Philip Freneau

As cunning as Becky Sharp.
—James Huneker

Cunning differs from wisdom as twilight from open day.
—Dr. Samuel Johnson

Cunning, like a miner, safely and unseen.
—Edward Moore

Cunning as a weasel.
—Kanuri Proverb

Cunning as Captn. Drake.
—John Ray (Handbook of Proverbs, 1670)