Cuckoo
Cuckoo adjective - Showing or marked by a lack of good sense or judgment.
Usage example: offered a completely cuckoo suggestion for using the defunct strip mall
Intelligent is an antonym for cuckoo.
Nearby Word: cuckooing
Intelligent
Intelligent adjective - Having or showing quickness of mind.
Usage example: his intelligent response to the emergency averted a disaster
Cuckoo is an antonym for intelligent.
Both words in one sentence
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Smarter Than You Look: It was apparent that Edith was much more intelligent than she let on, she just had a tendency to ramble and was a Cloud Cuckoo Lander.
Source: Series / All in the Family -
Well, he's certainly a Cloud Cuckoo Lander and designated Butt Monkey, but he generally comes off as less intelligent to the other characters.
Source: Dumb Blonde -
In contrast, Sticks, while still very much a paranoid Cloud Cuckoo Lander, seems more intelligent and unaggressive in later episodes, even managing to pull off a dry wit at times.
Source: Western Animation / Sonic Boom
Cite this Source
Intelligent and Cuckoo. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/cuckoo/intelligent
Cuckoo & Intelligent. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/cuckoo/intelligent>.
Intelligent or Cuckoo. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/cuckoo/intelligent.
Google Ngram Viewer shows how "cuckoo" and "intelligent" have occurred on timeline