Undubitable and Unsure
Opposite meaning words
Undubitable
Unsure
Unsure adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.
Undubitable is an antonym for unsure.
Cite this Source
Unsure and Undubitable. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/undubitable/unsure
Undubitable & Unsure. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/undubitable/unsure>.
Unsure or Undubitable. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/undubitable/unsure.
Google Ngram Viewer shows how "undubitable" and "unsure" have occurred on timeline