Dubious and Unassailable
Opposite meaning words
Dubious
Dubious adjective - Giving good reason for being doubted, questioned, or challenged.
Unassailable is an antonym for dubious.
Unassailable
Unassailable adjective - Not to be violated, criticized, or tampered with.
Cite this Source
Unassailable and Dubious. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/dubious/unassailable
Dubious & Unassailable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/dubious/unassailable>.
Unassailable or Dubious. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/dubious/unassailable.
Google Ngram Viewer shows how "dubious" and "unassailable" have occurred on timeline