Psychological
Psychological adjective - Of or relating to the mind.
Usage example: suffered from psychological disorders all of his life
Simple is an antonym for psychological.
Simple
Simple adjective - Free from all additions or embellishment.
Psychological is an antonym for simple.
Both words in one sentence
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Also expect complex examinations (which include, beyond the usual eyesight and psychological test, 2 blood tests and a lung X-ray) from at least 7 doctors for something as simple as getting a driver's license.
Source: Useful Notes / Romania - Even though it has a simple (minimalist) structure, it's a complex psychological work with several twists, encompassing 3 acts.The play takes place in the 1950's.
Source: Theatre / The Visit - Considering that when she tried to shoot her at first time, he disarm her using a simple psychological trick ("It's not loaded"), this is quite significant.
Cite this Source
Simple and Psychological. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/psychological/simple
Psychological & Simple. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/psychological/simple>.
Simple or Psychological. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/psychological/simple.
Google Ngram Viewer shows how "psychological" and "simple" have occurred on timeline