108 entries under subdued topic. ×

1
clear-headed(adjective, calm, quiet, reasonable, sensible)
1
constrained(adjective, calm, quiet, reasonable, sensible)
1
deferential(adjective, calm, quiet, kind, smooth)
1
disciplined(adjective, calm, quiet, reasonable, moderate)
1
down-to-earth(adjective, calm, sensible, dark, restrained)
1
drab(adjective, calm, quiet, reasonable, sensible)
1
eschewing(adjective, calm, quiet, reasonable, sensible)
1
forgoing(adjective, calm, quiet, reasonable, sensible)
1
hard-boiled(adjective, calm, sensible, dark, restrained)
1
hard-hearted(adjective, calm, indifferent, restrained, unsympathetic)
1
inhibited(adjective, calm, close, quiet, gentle)
1
low-key(adjective, calm, quiet, cool, smooth)
1
lukewarm(adjective, calm, cool, relaxed, indifferent)
1
manageable(adjective, calm, quiet, light, simple)
1
no-nonsense(adjective, calm, quiet, cool, reasonable)
1
peaceful dull(expression, calm, quiet, reasonable, dark)
1
severe(adjective, calm, quiet, reasonable, sensible)
1
sound(adjective, calm, quiet, reasonable, firm)
1
spiritless(adjective, calm, quiet, cool, kind)
1
tame(adjective, calm, quiet, kind, smooth)
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APASmart Define. (2015). serene thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/serene/thesaurus/synonyms
ChicagoSmart Define. 2015. "serene thesaurus" https://smartdefine.org/serene/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, serene thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/serene/thesaurus/synonyms>.
MLASmart Define. "serene thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/serene/thesaurus/synonyms>