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Longman Dictionary of Contemporary English
perfidious
adjective
EXAMPLES FROM OTHER ENTRIES
▪ a perfidious scheme
EXAMPLES FROM CORPUS
▪ The air was thick with paranoia as the conversation turned to the perfidious question of appearance money.
The Collaborative International Dictionary
Perfidious

Perfidious \Per*fid"i*ous\ (p[~e]r*f[i^]d"[i^]*[u^]s; 277), a.

  1. Guilty of perfidy; violating good faith or vows; false to trust or confidence reposed; teacherous; faithless; as, a perfidious friend.
    --Shak.

  2. Involving, or characterized by, perfidy. ``Involved in this perfidious fraud.''
    --Milton.

Douglas Harper's Etymology Dictionary
perfidious

1590s, from Latin perfidiosus "treacherous," from perfidia (see perfidy). Related: Perfidiously; perfidiousness.

Wiktionary
perfidious

a. Of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.

WordNet
perfidious

adj. tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans; "Punic faith"; "the perfidious Judas"; "the fiercest and most treacherous of foes"; "treacherous intrigues" [syn: punic, treacherous]

Usage examples of "perfidious".

Their light and perfidious ambition was eager to seize or anticipate the moment of a vacancy, while a law of succession, the guardian both of the prince and people, was gradually defined and confirmed in the hereditary monarchies of Europe.

But the perfidious Behemoth doused the confectionery counter with benzene from his primus, as one douses a bench in a bathhouse widi a tub of water, and it blazed up of itself.

Whenever this powdered and courteous old man, who never missed a Sunday at the convent chapel at Hammersmith, and who was in all respects, thoughts, conduct, and bearing utterly unlike the bearded savages of his nation, who curse perfidious Albion, and scowl at you from over their cigars, in the Quadrant arcades at the present day-- whenever the old Chevalier de Talonrouge spoke of Mistress Osborne, he would first finish his pinch of snuff, flick away the remaining particles of dust with a graceful wave of his hand, gather up his fingers again into a bunch, and, bringing them up to his mouth, blow them open with a kiss, exclaiming, Ah!

The moral interest of the fable, which is so powerfully sustained by the sufferings and endurance of Prometheus, would be annihilated if we could conceive of him as unsaying his high language and quailing before his successful and perfidious adversary.

He brooded on the fact that the perfidious Bacheet, that illegitimate son of a Beja father and a Galla pleasure dancer, was under no restrictions as to his nocturnal movements.

In the exercise of their functions, they were frequently called upon to detect the errors of heresy or the arts of faction, to oppose the designs of perfidious brethren, to stigmatize their characters with deserved infamy, and to expel them from the bosom of a society whose peace and happiness they had attempted to disturb.

Trimnel, bishop of Norwich, expatiated on the insolence of Sacheverel, who had arraigned archbishop Grindal, one of the eminent reformers, as a perfidious prelate, for having favoured and tolerated the discipline of Geneva.

Don Quixote shouted even louder, calling them perfidious traitors and saying that the lord of the castle was a varlet and a discourteous knight for allowing knights errant to be so badly treated, and that if he had already received the order of chivalry, he would enlighten him as to the full extent of his treachery.

After the failure of the Theodosian line, the choice of Pulcheria and of the senate might be justified in some measure by the characters of Martin and Leo, but the latter of these princes confirmed and dishonored his reign by the perfidious murder of Aspar and his sons, who too rigorously exacted the debt of gratitude and obedience.

The former tyrants, Caligula and Nero, Commodus, and Caracalla, were all dissolute and inexperienced youths, educated in the purple, and corrupted by the pride of empire, the luxury of Rome, and the perfidious voice of flattery.

When wilson had innocently inquired if this was because the revolutionary government had no money left to pay for the filling in of the enormous potholes in the roads, the agent had become even more nervous and said indignantly that it was entirely the fault of the inferior metal those perfidious Americanos used in the construction of their vehicles.

Enraptured, unable to control myself, I thrust my arm forward by a movement almost independent of my will, and my hand, too audacious, was on the point of lifting the hateful veil, but she prevented me by raising herself quickly on tiptoe, upbraiding me at the same time for my perfidious boldness, with a voice as commanding as her attitude.

Betty with joy, and I believe she would have pierced her perfidious lover to the heart if he had been brought before her at that moment.

They were pretty enough, but my head was full of my perfidious charmer, and besides, despite their neatness and prettiness, they were wanting in that grace which adds so many charms to pleasure.

As we stood looking at this tremendous scene, one of our friends made us remark, that the poison alder, and the poison vine, threw their graceful, but perfidious branches, over every rock, and assured us also that innumerable tribes of snakes found their dark dwellings among them.