Doubtful
Doubtful adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.
Not reliable and doubtful are semantically related. In some cases you can use "Not reliable" instead an adjective "Doubtful".
Not reliable
Doubtful and not reliable are semantically related. Sometimes you can use "Doubtful" instead an adjective phrase "Not reliable".
Mutual synonyms
Related pairs
- suspect and doubtful
- suspect and not reliable
- dubious and doubtful
- dubious and not reliable
- questionable and doubtful
- questionable and not reliable
- unsettled and doubtful
- unsettled and not reliable
- unclear and doubtful
- unclear and not reliable
- precarious and doubtful
- precarious and not reliable
- suspicious and doubtful
- suspicious and not reliable
Cite this Source
Not reliable and Doubtful. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/doubtful/not_reliable
Doubtful & Not reliable. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/doubtful/not_reliable>.
Not reliable or Doubtful. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/doubtful/not_reliable.
Google Ngram Viewer shows how "doubtful" and "not reliable" have occurred on timeline