Taking advantage of his absence, they perfidiously vilified him to the king.
(Perfidiously to the Marchioness) Look out, you know he's becoming dangerous for you.
Perfidiously, they only sought time to regain their strength.
He had been perfidiously treated, and Albuquerque now, in 1511, appeared before the city to call the monarch to account.
This man entered into a conspiracy ...