110 entries under calm topic. ×

1
low-key(adjective, quiet, gentle, sensible)
1
nonchalant(adjective, relaxed, tranquil, easygoing)
1
not turn a hair(expression, adjective, idiom, relaxed)
1
plain(adjective, open, tough, honest)
1
poised(adjective, sensible, relaxed, steady)
1
possessed(adjective, relaxed, tranquil, easygoing)
1
quieted(adjective, relaxed, tranquil, easygoing)
1
relaxed(adjective, tranquil, easygoing, serene)
1
repressed(adjective, quiet, gentle, relaxed)
1
self-assured(adjective, relaxed, tranquil, easygoing)
1
soft(adjective, quiet, gentle, sensible)
1
soothed(adjective, relaxed, tranquil, easygoing)
1
suppressed(adjective, relaxed, tranquil, easygoing)
1
sure of oneself(expression, adjective, idiom, relaxed)
1
together(adjective, relaxed, tranquil, easygoing)
1
toned down(expression, adjective, quiet, gentle)
1
unexcited(adjective, sensible, dark, restrained)
1
unimpassioned(adjective, tough, dark, restrained)
1
untroubled(adjective, relaxed, tranquil, easygoing)
0
abnegating(adjective, sensible, dark, restrained)
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APASmart Define. (2016). serious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/serious/thesaurus/synonyms
ChicagoSmart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, serious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>.
MLASmart Define. "serious thesaurus" 24 February 2016. Web. 28 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms>