Stratagems must be carefully distinguished strategy from perfidy, since the former are allowed, whereas the latter is prohibited.
Source: wiktionary
Perfidy
//ˈpɝ.fɪ.di//
Synonyms for "perfidy" (63 found)
Ranked by relevance and common usage.
Closest matches (13)
Strong matches (19)
Related words (31)
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
More general
3 entriesSynonyms
2 entriesRelated terms
2 entriesetymologically related_to
1 entrieshas context
1 entriesis a
1 entriesrelated to
9 entriesTranslations
37 translations across 16 languages.
Azerbaijani
3 entries- namərdlik noun (the act of violating faith or allegiance)
- vəfasızlıq noun (the act of violating faith or allegiance)
- xəyanətkarlıq noun (the act of violating faith or allegiance)
Bulgarian
3 entries- измяна noun (in warfare)
- коварство noun (the act of violating faith or allegiance)
- предателство noun (in warfare)
Catalan
1 entries- perfídia noun (the act of violating faith or allegiance)
Czech
2 entries- proradnost noun (the act of violating faith or allegiance)
- zrada noun (the act of violating faith or allegiance)
Finnish
3 entries- kavaluus noun (the act of violating faith or allegiance)
- petollisuus noun (the act of violating faith or allegiance)
- sotapetos noun (in warfare)
French
1 entries- perfidie noun (the act of violating faith or allegiance)
Hungarian
4 entries- hitszegés noun (the act of violating faith or allegiance)
- hűtlenség noun (the act of violating faith or allegiance)
- perfídia noun (in warfare)
- álnokság noun (the act of violating faith or allegiance)
Latin
1 entries- perfidia noun (the act of violating faith or allegiance)
Persian
1 entries- بیوفایی noun (the act of violating faith or allegiance)
Polish
1 entries- perfidia noun (the act of violating faith or allegiance)
Portuguese
1 entries- perfídia noun (the act of violating faith or allegiance)
Romanian
1 entries- perfidie noun (the act of violating faith or allegiance)
Russian
4 entries- вероло́мство noun (the act of violating faith or allegiance)
- вероло́мство noun (in warfare)
- изме́на noun (the act of violating faith or allegiance)
- преда́тельство noun (the act of violating faith or allegiance)
Spanish
1 entries- perfidia noun (the act of violating faith or allegiance)
Swedish
4 entries- förräderi noun (the act of violating faith or allegiance)
- förräderi noun (in warfare)
- förrädiskt förfarande noun (in warfare)
- perfiditet noun (the act of violating faith or allegiance)
Ukrainian
3 entries- віроломство noun (the act of violating faith or allegiance)
- віроломство noun (in warfare)
- зрада noun (the act of violating faith or allegiance)
Sample sentences
7 total sentences available.
Abuse of a protective emblem amounts to perfidy and constitutes a war crime under the customary law of armed conflict.
Source: wiktionary
Ruses of war are legitimate so long as they do not involve treachery or perfidy on the part of the belligerent resorting to them.
Source: wiktionary
Cyberattacks almost inevitably involve an element of deception, such as tricking a user to click on a malicious link. So, to what extent could cyberattacks count as perfidy and therefore be illegal given international humanitarian law?
Source: wiktionary
Showing 4 of 7 available sentences.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.