Collected
Collected adjective - Free from emotional or mental agitation.
Rational and collected are semantically related in calm topic. In some cases you can use "Rational" instead an adjective "Collected", when it comes to topics like discerning.
Mutual synonyms
Related pairs
Both words in one sentence
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Used for comedic effect in the finale of Ghostbusters, where calm, collected and rational Egon calmly explains to his fellow Ghostbusters that he's "terrified beyond the capacity for rational thought".
Source: That Makes Me Feel Angry -
Also, Mia Fey, who is more collected and rational than Phoenix, eventually becoming his mentor before and after being murdered.
Source: Lawful Good - Melvin Potter in Daredevil has mental issues that frequently make him childlike and confused, but by Season 2, he is far more collected and rational.
Source: Dumbass No More
Cite this Source
Rational and Collected. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/collected/rational
Collected & Rational. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/collected/rational>.
Rational or Collected. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/collected/rational.
Google Ngram Viewer shows how "collected" and "rational" have occurred on timeline