Incompetent
Incompetent adjective - Lacking qualities (as knowledge, skill, or ability) required to do a job.
Stupid and incompetent are semantically related. In some cases you can use "Stupid" instead an adjective "Incompetent".
Nearby Words: incompetence, incompetently
Stupid
Stupid adjective - Not having or showing an ability to absorb ideas readily.
Incompetent and stupid are semantically related. Sometimes you can use "Incompetent" instead an adjective "Stupid".
Both words in one sentence
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His job tenure does not last, because sans the unfortunately short-lived Niu Fu the rest are either stupid, incompetent or stupid and incompetent.
Source: Manhua / Ravages Of Time - As one of the characters lampshaded, someone in the police with connections similar to those the drug dealer had would have made lieutenant at least, regardless of how stupid or incompetent he might be.
Source: No Delays for the Wicked -
In early strips he was an insensitive jerk but not noticeably stupid or incompetent.
Source: Comic Strip / Dilbert
Cite this Source
Stupid and Incompetent. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/incompetent/stupid
Incompetent & Stupid. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/incompetent/stupid>.
Stupid or Incompetent. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/incompetent/stupid.
Google Ngram Viewer shows how "incompetent" and "stupid" have occurred on timeline