Dubious
Dubious adjective - Giving good reason for being doubted, questioned, or challenged.
Usage example: any letter bearing the signature of Geronimo would be of dubious authenticity, to say the least
Supposed and dubious are semantically related. In some cases you can use "Supposed" instead an adjective "Dubious".
Mutual synonyms
Both words in one sentence
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The Order of the Sword from the fourth game is supposed to act this way for the island of Fortuna, but it is eventually shown to be somewhat dubious.
Source: Who You Gonna Call? -
Family-Unfriendly Violence: The oft-quoted truism that Doctor Who was originally supposed to be an educational programme for children seems somewhat dubious in light of this story.
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I'm not sure, but I think if you're not absolutely positive about an example, you're supposed to just put it up anyway with a disclaimer about how dubious it is.
Cite this Source
Supposed and Dubious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/dubious/supposed
Dubious & Supposed. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/dubious/supposed>.
Supposed or Dubious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/dubious/supposed.
Google Ngram Viewer shows how "dubious" and "supposed" have occurred on timeline