Mendaciousness and Sincerity
Opposite meaning words
Mendaciousness
Mendaciousness noun - The tendency to tell lies.
Usage example: her memoirs have such an air of pervasive mendaciousness that she seems to have lost all sense of what truth is
Sincerity is an antonym for mendaciousness.
Sincerity
Sincerity noun - The quality of being open and truthful; not deceitful or hypocritical.
Mendaciousness is an antonym for sincerity.
Cite this Source
Sincerity and Mendaciousness. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/mendaciousness/sincerity
Mendaciousness & Sincerity. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/mendaciousness/sincerity>.
Sincerity or Mendaciousness. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/mendaciousness/sincerity.
Google Ngram Viewer shows how "mendaciousness" and "sincerity" have occurred on timeline