Definition of perfidious in English:

perfidious

adjective pəˈfɪdɪəspərˈfɪdiəs

literary

Deceitful and untrustworthy.
a perfidious lover
Example sentencesExamples
- The cause of these antinomies is language, for language, being a useful tool, is also a self-locking instrument - and at the same time a perfidious one, since it tells nothing about when it becomes a pitfall itself.
- ‘Albion has never seemed so perfidious or so lucky,’ the article begins.
- She is indifferent, negligent, unfeeling, untrustworthy, and perfidious.
- I refer, of course, not to the evil, perfidious nature of corporate governance because, let's face it, we're all too cowed and defenceless to complain, but to badly dubbed television commercials.
- If anyone in history has ever emitted a bigger pile of oozing, sanctimonious, unctuous, fetid, perfidious, malodorous offal than this, I'd like to know what it could possibly be.
Synonyms
treacherous, duplicitous, deceitful, disloyal, faithless, unfaithful, traitorous, treasonous, false, untrue, double-dealing, dishonest, two-faced, Janus-faced, untrustworthy
rare false-hearted, double-faced, truthless, Punic

Derivatives

perfidiously

adverb pəˈfɪdɪəslipərˈfɪdiəsli

literary

perfidiousness

noun ˈpəːfɪdi

literary

It was designed to show ‘the tyranny and perfidiousness exercised by the powerful members of the community against those who are less privileged than themselves’.

Origin

Late 16th century: from Latin perfidiosus, from perfidia 'treachery'.

Rhymes

fastidious, hideous, insidious, invidious

Definition of perfidious in US English:

perfidious

adjectivepərˈfɪdiəspərˈfidēəs

literary

Deceitful and untrustworthy.
a perfidious lover
Example sentencesExamples
- If anyone in history has ever emitted a bigger pile of oozing, sanctimonious, unctuous, fetid, perfidious, malodorous offal than this, I'd like to know what it could possibly be.
- She is indifferent, negligent, unfeeling, untrustworthy, and perfidious.
- I refer, of course, not to the evil, perfidious nature of corporate governance because, let's face it, we're all too cowed and defenceless to complain, but to badly dubbed television commercials.
- ‘Albion has never seemed so perfidious or so lucky,’ the article begins.
- The cause of these antinomies is language, for language, being a useful tool, is also a self-locking instrument - and at the same time a perfidious one, since it tells nothing about when it becomes a pitfall itself.
Synonyms
treacherous, duplicitous, deceitful, disloyal, faithless, unfaithful, traitorous, treasonous, false, untrue, double-dealing, dishonest, two-faced, janus-faced, untrustworthy

Origin

Late 16th century: from Latin perfidiosus, from perfidia ‘treachery’.

单词	perfidious
释义	Definition of perfidious in English: perfidious adjective pəˈfɪdɪəspərˈfɪdiəs literary Deceitful and untrustworthy. a perfidious lover Example sentencesExamples The cause of these antinomies is language, for language, being a useful tool, is also a self-locking instrument - and at the same time a perfidious one, since it tells nothing about when it becomes a pitfall itself. ‘Albion has never seemed so perfidious or so lucky,’ the article begins. She is indifferent, negligent, unfeeling, untrustworthy, and perfidious. I refer, of course, not to the evil, perfidious nature of corporate governance because, let's face it, we're all too cowed and defenceless to complain, but to badly dubbed television commercials. If anyone in history has ever emitted a bigger pile of oozing, sanctimonious, unctuous, fetid, perfidious, malodorous offal than this, I'd like to know what it could possibly be. Synonyms treacherous, duplicitous, deceitful, disloyal, faithless, unfaithful, traitorous, treasonous, false, untrue, double-dealing, dishonest, two-faced, Janus-faced, untrustworthy rare false-hearted, double-faced, truthless, Punic Derivatives perfidiously adverb pəˈfɪdɪəslipərˈfɪdiəsli literary perfidiousness noun ˈpəːfɪdi literary It was designed to show ‘the tyranny and perfidiousness exercised by the powerful members of the community against those who are less privileged than themselves’. Origin Late 16th century: from Latin perfidiosus, from perfidia 'treachery'. Rhymes fastidious, hideous, insidious, invidious Definition of perfidious in US English: perfidious adjectivepərˈfɪdiəspərˈfidēəs literary Deceitful and untrustworthy. a perfidious lover Example sentencesExamples If anyone in history has ever emitted a bigger pile of oozing, sanctimonious, unctuous, fetid, perfidious, malodorous offal than this, I'd like to know what it could possibly be. She is indifferent, negligent, unfeeling, untrustworthy, and perfidious. I refer, of course, not to the evil, perfidious nature of corporate governance because, let's face it, we're all too cowed and defenceless to complain, but to badly dubbed television commercials. ‘Albion has never seemed so perfidious or so lucky,’ the article begins. The cause of these antinomies is language, for language, being a useful tool, is also a self-locking instrument - and at the same time a perfidious one, since it tells nothing about when it becomes a pitfall itself. Synonyms treacherous, duplicitous, deceitful, disloyal, faithless, unfaithful, traitorous, treasonous, false, untrue, double-dealing, dishonest, two-faced, janus-faced, untrustworthy Origin Late 16th century: from Latin perfidiosus, from perfidia ‘treachery’.
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