1
sagacious
1
sedate(adjective, calm, relaxed, tranquil, easygoing)
1
self-assured(adjective, calm, relaxed, tranquil, easygoing)
1
self-possessed(adjective, calm, relaxed, tranquil, easygoing)
1
serene(adjective, calm, relaxed, tranquil, easygoing)
1
serious(adjective, calm, relaxed, tranquil, easygoing)
1
smart
1
soothed(adjective, calm, relaxed, tranquil, easygoing)
1
staid(adjective, calm, relaxed, tranquil, easygoing)
1
steady
1
straight
1
suppressed(adjective, calm, relaxed, tranquil, easygoing)
1
sure of oneself(expression, adjective, idiom, calm, relaxed)
1
tranquil(adjective, calm, relaxed, easygoing, serene)
1
unclouded
1
unflappable(adjective, calm, relaxed, tranquil, easygoing)
1
unruffled(adjective, calm, relaxed, tranquil, easygoing)
1
untroubled(adjective, calm, relaxed, tranquil, easygoing)
1
wholesome
1
wide-awake
11 years ago|6k views|share |citing 
APASmart Define. (2015). clearheaded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/clearheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "clearheaded thesaurus" https://smartdefine.org/clearheaded/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, clearheaded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/clearheaded/thesaurus/synonyms>.
MLASmart Define. "clearheaded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/clearheaded/thesaurus/synonyms>