Doubtful
Unproven
Unproven adjective - Not proved.
Doubtful and unproven are semantically related in not determined topic. Sometimes you can use "Doubtful" instead an adjective "Unproven".
Mutual synonyms
Related pairs
- suspect and doubtful
- suspect and unproven
- dubious and doubtful
- dubious and unproven
- questionable and doubtful
- questionable and unproven
- unsettled and doubtful
- unsettled and unproven
- unclear and doubtful
- unclear and unproven
- ambiguous and doubtful
- ambiguous and unproven
- theoretical and doubtful
- theoretical and unproven
Cite this Source
Unproven and Doubtful. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/doubtful/unproven
Doubtful & Unproven. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/doubtful/unproven>.
Unproven or Doubtful. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/doubtful/unproven.
Google Ngram Viewer shows how "doubtful" and "unproven" have occurred on timeline