What is another word for perfidiousness?
Pronunciation: [pɜːfˈɪdɪəsnəs] (IPA) 
Perfidiousness is a term that describes the quality of being deceitful or treacherous. It essentially refers to the act of betraying someone's trust or acting in a dishonest manner. Other synonyms for perfidiousness could be duplicity, untrustworthiness, disloyalty, faithlessness, or deceit. Although these terms are similar in their meaning, they can have different connotations depending on their context. For example, duplicity suggests a deliberate deception, while untrustworthiness suggests a lack of reliability. Disloyalty implies a betrayal of an agreement or a cause, while faithlessness is a broader term that implies a lack of reliability of any kind. However, regardless of the word used, perfidiousness is universally regarded as an undesirable trait.
