Cool
Impassive
Impassive adjective - Not feeling or showing emotion.
Usage example: she remained impassive as the officers informed her of her son's death
Cool is a synonym for impassive in unemotional topic. Sometimes you can use "Cool" instead an adjective "Impassive".
Mutual synonyms
Both words in one sentence
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But beneath that unchanging, impassive expression, she's hiding deep bitterness and rage — when she loses her cool, it's the scariest thing you'll ever see.
Source: Stringy-Haired Ghost Girl -
Ronnie Gardocki from The Shield was always the most impassive member of the Strike Team; even when attempting to kill Shane out of revenge he never lost his cool... until the final episode when he found out how thoroughly he was betrayed by Vic.
Source: Not So Stoic
Cite this Source
Impassive and Cool. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/cool/impassive
Cool & Impassive. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/cool/impassive>.
Impassive or Cool. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/cool/impassive.
Google Ngram Viewer shows how "cool" and "impassive" have occurred on timeline