Perfidiousness and Trustworthiness
Opposite meaning words
Perfidiousness
Perfidiousness noun - Lack of faithfulness especially to one's husband or wife.
Usage example: perfidiousness seems to descend to a whole other level when a husband cheats on a wife who's terminally ill
Trustworthiness is an antonym for perfidiousness.
Trustworthiness
Trustworthiness noun - Worthiness as the recipient of another's trust or confidence.
Perfidiousness is an antonym for trustworthiness.
Cite this Source
Trustworthiness and Perfidiousness. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/perfidiousness/trustworthiness
Perfidiousness & Trustworthiness. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/perfidiousness/trustworthiness>.
Trustworthiness or Perfidiousness. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/perfidiousness/trustworthiness.
Google Ngram Viewer shows how "perfidiousness" and "trustworthiness" have occurred on timeline