128 entries under unruffled topic. ×

2
somber(adjective, calm, quiet, cool, reasonable)
2
subdued(adjective, calm, quiet, kind, smooth)
2
unflustered(adjective, calm, cool, steady, detached)
1
assured(adjective, calm, quiet, cool, relaxed)
1
unimpassioned(adjective, calm, quiet, reasonable, sensible)
1
abnegating(adjective, calm, quiet, reasonable, sensible)
1
clearheaded(adjective, calm, relaxed, tranquil, easygoing)
1
commodious(adjective, calm, quiet, light, smooth)
1
commonsensical(adjective, calm, relaxed, restrained, tranquil)
1
constrained(adjective, calm, quiet, reasonable, sensible)
1
cool as cucumber(expression, adjective, idiom, calm, quiet)
1
cozy(adjective, calm, quiet, light, secure)
1
cursive(adjective, calm, quiet, light, smooth)
1
cushy(adjective, calm, quiet, light, smooth)
1
disciplined(adjective, calm, quiet, reasonable, moderate)
1
disimpassioned(adjective, calm, cool, relaxed, steady)
1
down-to-earth(adjective, calm, sensible, dark, restrained)
1
drab(adjective, calm, quiet, reasonable, sensible)
1
effortless(adjective, calm, quiet, light, cool)
1
eschewing(adjective, calm, quiet, reasonable, sensible)
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APASmart Define. (2015). serene thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/serene/thesaurus/synonyms
ChicagoSmart Define. 2015. "serene thesaurus" https://smartdefine.org/serene/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, serene thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/serene/thesaurus/synonyms>.
MLASmart Define. "serene thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/serene/thesaurus/synonyms>