Questionable
Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Stupid and questionable are semantically related. In some cases you can use "Stupid" instead an adjective "Questionable".
Stupid
Stupid adjective - Not having or showing an ability to absorb ideas readily.
Questionable and stupid are semantically related. Sometimes you can use "Questionable" instead an adjective "Stupid".
Mutual synonyms
Both words in one sentence
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Stupid Evil: After being granted the last minute lifeline the Über project provided Hitler continued making the kind of questionable decisions he had for at least the previous two years.
Source: Comic Book / Über - Other common features include drugs and alcohol, as well as other questionable activity because they're Young and Stupid.
Source: Ode To Youth - Most of them are petty, hedonistic assholes who are more concerned with their lavish lifestyles, and do things that are morally questionable or just plain stupid in their spy business.
Source: Nominal Hero
Cite this Source
Stupid and Questionable. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/questionable/stupid
Questionable & Stupid. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/questionable/stupid>.
Stupid or Questionable. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/questionable/stupid.
Google Ngram Viewer shows how "questionable" and "stupid" have occurred on timeline