Knav″ish, a. 1. Like or characteristic of a knave; given to knavery; trickish; fraudulent; dishonest; villainous; as, a knavish fellow, or a knavish trick. “Knavish politicians.” Macaulay.
2. Mischievous; roguish; waggish.
Cupid is knavish lad,
Thus to make poor females mad. Shak.