Characterized by unforeseen or hidden hazards; dangerous or deceptive:
Sir T. North
Tending to deceive; apt to lie or cheat
Having the appearance of someone dishonest, criminal or unreliable; such as someone with shifty eyes.
(Slang) Hard to cope with; difficult or troublesome:
Resentful and rebellious, especially against authority.
Of or involving treason; treasonable
Not having religious faith
Not faithful or loyal
Characterized by corrupt dealings, especially bribery:
Not true to duty or obligation
Having the character of treachery attributed to the Carthaginians by the Romans.
Morally unsound or debased; perverted; evil; depraved
Uttering falsehood; dishonest or deceitful.
Managing for an owner; acting as trustee
Find another word for perfidious. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for perfidious, like: treacherous, faithless, dishonest, deceitful, shifty, mean, disaffected, disloyal, traitorous, unfaithful and untrue.