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perfidy

per·fi·dy

perfidy

 
pronunciation:
puhr fih di
features:
Word Parts
part of speech: noun
inflections: perfidies
definition: an act or the practice of conscious, deliberate disloyalty or treachery; breach of faith.
The traitor was captured by his former regiment and made to suffer for his perfidy.
antonyms:
fealty
similar words:
treachery