Which preposition to use with fraudulent

in Occurrences 2%

He was not without talent, for in one of the Eclogues he bears his part in the poetical contention with credit; but he was unfaithful and fraudulent in his amours, envious, quarrelsome, scurrilous, and a braggart; and his face was remarkable for its dark, Italian hue,"quamvis ille fuscus," etc.

Which preposition to use with  fraudulent