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
Vacillating and perfidious are semantically related. In some cases you can use "Vacillating" instead an adjective "Perfidious".
Nearby Words: perfidy, perfidiously
Vacillating
Vacillating adjective - Uncertain in purpose or action.
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Synonyms for Vacillating
Perfidious and vacillating are semantically related. Sometimes you can use "Perfidious" instead an adjective "Vacillating".
Mutual synonyms
Cite this Source
Vacillating and Perfidious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/perfidious/vacillating
Perfidious & Vacillating. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/perfidious/vacillating>.
Vacillating or Perfidious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/perfidious/vacillating.
Google Ngram Viewer shows how "perfidious" and "vacillating" have occurred on timeline