knavish

Like a knave; suited to a knave; tricky; dishonest; fraudulent: as, a knavish fellow; a knavish trick.

Roguish; waggish; mischievous.

Synonyms Trickish, rascally, unprincipled.

Like or characteristic of a knave{3}; given to knavery; trickish; fraudulent; dishonest; villainous.

Mischievous; roguish; waggish; rascally.

Having the characteristics of a knave; mischievous, roguish, waggish, rascally or impertinent

marked by skill in deception