- Definitions|1
- Thesaurus|451
- Abbreviations|0
| sensible(adjective, calm, sound, reasonable) | |
| steady(adjective, calm, sound, reasonable, sensible) | |
| tranquil(adjective, calm, quiet, relaxed, casual) | |
| unemotional(adjective, calm, quiet, cool, relaxed) | |
| untroubled(adjective, calm, cool) | |
| well-balanced(adjective, shrewd, acute) | |
| all there(expression, adjective, calm, sound, reasonable) | |
| apathetic | |
| chilly | |
| cold | |
| cool as cucumber(expression, adjective, idiom, calm, reasonable) | |
| dependable(adjective, calm, sound, reasonable, sensible) | |
| discreet(adjective, calm, sound, reasonable, sensible) | |
| even-tempered(adjective, calm, cool, sound, reasonable) | |
| feeble | |
| inexcitable | |
| judicious(adjective, calm, sound, reasonable, sensible) | |
| level headed | |
| logical | |
| lukewarm |
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| APA | Smart Define. (2015). coolheaded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/coolheaded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "coolheaded thesaurus" https://smartdefine.org/coolheaded/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, coolheaded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/coolheaded/thesaurus/synonyms>. |
| MLA | Smart Define. "coolheaded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/coolheaded/thesaurus/synonyms> |