Cool
Cool adjective - Free from emotional or mental agitation.
Usage example: in a crisis keep a cool head, even if no one else is
Serene is a synonym for cool in calm topic. In some cases you can use "Serene" instead the word "Cool" as an adjective or a noun, when it comes to topics like character trait, composed, controlled, quiet. popular alternative
Serene
Serene adjective - Free from emotional or mental agitation.
Usage example: a serene woman who was everyone's source of support
Cool is a synonym for serene in calm topic. You can use "Cool" instead the word "Serene" as an adjective or a noun, if it concerns topics such as character trait, composed, controlled, quiet. popular alternative
Mutual synonyms
Cite this Source
Serene and Cool. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/cool/serene
Cool & Serene. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/cool/serene>.
Serene or Cool. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/cool/serene.
Google Ngram Viewer shows how "cool" and "serene" have occurred on timeline