2
sensible(adjective, calm, sound, reasonable)
2
steady(adjective, calm, sound, reasonable, sensible)
2
tranquil(adjective, calm, quiet, relaxed, casual)
2
unemotional(adjective, calm, quiet, cool, relaxed)
2
untroubled(adjective, calm, cool)
2
well-balanced(adjective, shrewd, acute)
1
all there(expression, adjective, calm, sound, reasonable)
1
apathetic
1
chilly
1
cold
1
cool as cucumber(expression, adjective, idiom, calm, reasonable)
1
dependable(adjective, calm, sound, reasonable, sensible)
1
discreet(adjective, calm, sound, reasonable, sensible)
1
even-tempered(adjective, calm, cool, sound, reasonable)
1
feeble
1
inexcitable
1
judicious(adjective, calm, sound, reasonable, sensible)
1
level headed
1
logical
1
lukewarm
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APASmart Define. (2015). coolheaded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/coolheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "coolheaded thesaurus" https://smartdefine.org/coolheaded/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, coolheaded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/coolheaded/thesaurus/synonyms>.
MLASmart Define. "coolheaded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/coolheaded/thesaurus/synonyms>