Doubtful
Doubtful adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.
Indeterminate is a synonym for doubtful in certain topic. In some cases you can use "Indeterminate" instead an adjective "Doubtful", when it comes to topics like questionable, unlikely.
Indeterminate
Indeterminate adjective - Not precisely determined or established; not fixed or known in advance.
Doubtful is a synonym for indeterminate in certain topic. You can use "Doubtful" instead an adjective "Indeterminate".
Mutual synonyms
Related pairs
- dubious and doubtful
- dubious and indeterminate
- questionable and doubtful
- questionable and indeterminate
- unsettled and doubtful
- unsettled and indeterminate
- obscure and doubtful
- obscure and indeterminate
- unclear and doubtful
- unclear and indeterminate
- ambiguous and doubtful
- ambiguous and indeterminate
- undetermined and doubtful
- undetermined and indeterminate
Cite this Source
Indeterminate and Doubtful. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/doubtful/indeterminate
Doubtful & Indeterminate. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/doubtful/indeterminate>.
Indeterminate or Doubtful. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/doubtful/indeterminate.
Google Ngram Viewer shows how "doubtful" and "indeterminate" have occurred on timeline