Determined and Perfidious
Opposite meaning words
Determined
Determined adjective - Fully committed to achieving a goal.
Perfidious is an antonym for determined.
Perfidious
Perfidious adjective - Not true in one's allegiance to someone or something.
Usage example: a perfidious campaign worker revealed the senator's strategy to his leading rival for the nomination
Determined is an antonym for perfidious.
Nearby Words: perfidy, perfidiously
Cite this Source
Perfidious and Determined. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/determined/perfidious
Determined & Perfidious. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/determined/perfidious>.
Perfidious or Determined. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/determined/perfidious.
Google Ngram Viewer shows how "determined" and "perfidious" have occurred on timeline