perfidious

📖 Definitions

adjective

Treacherous; deceitful.

💬 Usage Examples

“According to Barnum’s version of events, he was ruined by a perfidious business partner, who tricked him into endorsing half a million dollars’ worth of promissory notes.” Elizabeth Kolbert; You Can’t Make It Up; The New Yorker; Aug 5, 2019.
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