1. Dishonest, disreputable, or illegal behavior; deceitful or fraudulent conduct
The politician was accused of knavery and corruption.
O político foi acusado de velhacaria e corrupção.
2. A dishonest or mischievous trick; a roguish or fraudulent act
His financial schemes were nothing but knavery.
Seus esquemas financeiros eram pura velhacaria.