Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Perfidious and difficult are semantically related. In some cases you can use "Perfidious" instead an adjective "Difficult".
Nearby Word: difficulty
Perfidious
Perfidious adjective - Not true in one's allegiance to someone or something.
Difficult and perfidious are semantically related. Sometimes you can use "Difficult" instead an adjective "Perfidious".
Nearby Words: perfidy, perfidiously
Cite this Source
Perfidious and Difficult. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/difficult/perfidious
Difficult & Perfidious. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/difficult/perfidious>.
Perfidious or Difficult. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/difficult/perfidious.
Google Ngram Viewer shows how "difficult" and "perfidious" have occurred on timeline