Unfaithful or treacherous
विश्वासघातक
English Usage: His disloyal actions cost him his friends.
Hindi Usage: उसकी विश्वासघातक कार्रवाई ने उसे उसके दोस्तों को खो दिया।
vishwasghatak, vishwasghaatak, vishwaasghaatak, vishwaasghatak