1
reserved(adjective, calm, reasonable, moderate, firm)
1
resolute(adjective, hard, tough, firm, sensible)
1
responsible(adjective, mature, trustworthy)
1
restful(adjective, quiet, cool, moderate, gentle)
1
restrained(adjective, calm, quiet, reasonable, moderate)
1
retrospective(adjective, reasonable, keen, deep, rational)
1
right(sensible, rational, healthy, stable, sober)
1
right-minded(sensible, rational, healthy, stable, sober)
1
satisfactory(adjective, good, reasonable, honest, sensible)
1
satisfied(adjective, quiet, cool, moderate, gentle)
1
satisfying(adjective, good, reasonable, honest, sensible)
1
secure(adjective, good, open, firm, honest)
1
sedate(adjective, calm, quiet, cool, reasonable)
1
self-confident
1
serious(adjective, calm, reasonable, sensible, dark)
1
severe(adjective, calm, quiet, reasonable, sensible)
1
shrewd(adjective, hard, sound, reasonable, sensible)
1
sober-minded
1
soft(adjective, calm, quiet, reasonable, moderate)
1
solemn(adjective, calm, quiet, reasonable, sensible)
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APASmart Define. (2015). levelheaded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/levelheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "levelheaded thesaurus" https://smartdefine.org/levelheaded/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, levelheaded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/levelheaded/thesaurus/synonyms>.
MLASmart Define. "levelheaded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/levelheaded/thesaurus/synonyms>