Stupid
Stupid adjective - Not having or showing an ability to absorb ideas readily.
Usage example: don't ask stupid questions
Simple is a synonym for stupid in mental condition topic. In some cases you can use "Simple" instead the word "Stupid" as an adjective or a noun, when it comes to topics like property, imbecile, irresponsible.
Simple
Simple adjective - Lacking in education or the knowledge gained from books.
Usage example: the fact that he didn't go to college doesn't mean he's simple
Stupid is a synonym for simple in feeble-minded topic. You can use "Stupid" instead the word "Simple" as an adjective or a noun, if it concerns topics such as characteristic, mental condition, foolish, imbecile.
Mutual synonyms
Cite this Source
Simple and Stupid. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/stupid/simple
Stupid & Simple. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/stupid/simple>.
Simple or Stupid. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/stupid/simple.
Google Ngram Viewer shows how "stupid" and "simple" have occurred on timeline