Last Updated
：2025/11/22
perfidiousness
Noun
rare
uncountable
usually
Japanese Meaning
不忠実、裏切り（unfaithfulness） / 欺瞞、詐欺（deceitfulness） / 裏切り、背信（perfidy）
Sense（1）
（ plural ）
Quizzes for review
(rare) Unfaithfulness; deceitfulness; perfidy.
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perfidiousness
The perfidiousness of his promises became apparent when he abandoned the project at the last minute.
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The perfidiousness of his promises became apparent when he abandoned the project at the last minute.
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English - English
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