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perfidy

perfidy

4 9.9
A dishonest act that breaks someone's trust
  • noun
  • /ˈpɜr.fɪ.di/
  • Formal
translation icon : traición
  • Palestine's Arab neighbors were angry about both Zionist inroads and British power and perfidy in their part of the world.

Painful, painful, unjust death accompanied by betrayal, the perfidy of the mob and the dominion of the tyrant.

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Examples

  • Gandhi, of course, was relentless in his critique of British perfidy and he would have liked your speech.

  • The director of the CIA refused to accept the blame for the perfidy of a lame-duck president.

    Blog text (31)
  • I always point to the perfidy of the War Office on this issue.

    Blog text (16)
  • For others, not being number one can only be explained by the perfidy of others and must be addressed by stern measures.

    Academic text (1993)
  • The promise of milk and honey becomes the perfidy of persecution and death.

    Academic text (1991)
  • I think what happened here will be regarded as yet another manifestation of French perfidy and ineptitude in battle.

    Fiction book (2000)
  • Humphrey seems to brood with his narrator upon the perfidies of history, and Texas history in particular.

    Academic text (1991)
  • Khamenei also indirectly warned Washington's allies of U.S. perfidy.

    Academic text (2011)
  • What better proof could Chávez offer of U.S. perfidy than the betrayal of its best friend in the hemisphere?

    Academic text (2008)
  • The politician's perfidy in betraying his party shocked his supporters.

Synonyms

betrayal
vsperfidy
197 3.9

An act of not being loyal to someone, for example telling their secrets or helping an enemy

focuses on treacherous, deceitful conduct that breaks someone's trust
dishonesty
vsperfidy
46 3.2

Actions like lying, cheating, or stealing

is a specific kind of deceit that breaks personal trust
treachery
vsperfidy
46 7.5

To betray someone's trust or loyalty

is the same act described by a single, strong term
double-crossing
vsperfidy
5 7.4

An act of betraying someone who trusted you after pretending to help them

is the general act of treachery, not only disguised betrayal
breach of trust
vsperfidy
4 6.7

To break the trust someone gives you by acting dishonestly or failing a duty

emphasizes active deceit and treachery rather than duty failure
backstabbing
vsperfidy
  • Informal
3 6.7

Acting secretly to hurt someone you seem friendly with

is broader, covering any treacherous or deceitful act
unfaithfulness
vsperfidy
1 6.1

Not being loyal to a partner, for example having a secret romantic or sexual relationship

is the sharper, deceitful act that breaks trust
faithlessness
vsperfidy
1 7.7

Not being loyal or keeping promises to people who trust you

is focused on deliberate deceitful betrayal of trust
perfidiousness
vsperfidy
  • Formal
9.9

A way of acting that is disloyal and betrays someone's trust

is the concrete act that shows that disloyal quality
traitorism
vsperfidy
9.9

The act of betraying your country or people by helping their enemies

is the specific deed of treachery rather than the general state
traitorousness
vsperfidy
8.8

Being disloyal to your country, friends, or cause

is the actual treacherous action rather than the character trait
unfaith
vsperfidy
  • Archaic
9.7

Lack of loyalty that breaks trust between people

is the more forceful and treacherous form of that lack

Antonyms

503 1.3

Strong and lasting support for a person, group, or idea

How Treacherous

treachery
46 7.5
perfidy
  • Formal
4 9.9
betrayal
197 3.9
deceit
66 4.6
dishonesty
46 3.2

Surface Forms

perfidy singular
perfidies plural

Morphology

perfidy = perfidious (opaque) = per + fid + y

Although historically analyzable as Latin per- + fid- + -y, these combining forms are not productive or familiar to average learners, so the meaning cannot be derived from the parts.

Etymology

The word perfidy comes from Latin parts per- and fidus, where fidus means 'faith' and appears in words like fidelity and confide. So perfidy is a breaking of 'faith' — in other words a betrayal of 'trust'.