Duplicitous and Perfidious

Duplicitous

Duplicitous adjective - Given to or marked by cheating and deception.
Usage example: warned her not to trust the duplicitous art dealer

Perfidious and duplicitous are semantically related In some cases you can use "Perfidious" instead the word "Duplicitous" as an adjective or a noun.

Perfidious

Perfidious adjective - Not true in one's allegiance to someone or something.

Duplicitous and perfidious are semantically related in treacherous topic. You can use "Duplicitous" instead the word "Perfidious" as an adjective or a noun.

Nearby Words: perfidy, perfidiously
Cite this Source
Perfidious and Duplicitous. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/duplicitous/perfidious
Duplicitous & Perfidious. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/duplicitous/perfidious>.
Perfidious or Duplicitous. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/duplicitous/perfidious.
Google Ngram Viewer shows how "duplicitous" and "perfidious" have occurred on timeline