635 entries under adjective topic. ×

2
emotionless(cool, blank, aloof, unemotional)
2
feckless(feature, state, indifferent, trait)
2
flush(quiet, soft, gentle, flat)
2
forgiving(calm, quiet, kind, smooth)
2
genial(calm, kind, moderate, gentle)
2
glad(feature, state, happy, trait)
2
glassy(quiet, soft, gentle, flat)
2
good-tempered(calm, kind, smooth, soft)
2
harmonious(calm, quiet, cool, smooth)
2
heedless(feature, state, indifferent, trait)
2
idle
2
immovable(calm, cool, firm, solid)
2
indolent(mild, relaxed, tolerant, laid-back)
2
indulgent(calm, kind, soft, gentle)
2
inscrutable(quiet, cool, moderate, gentle)
2
kindly(calm, kind, moderate, gentle)
2
leisurely(calm, quiet, light, smooth)
2
lighthearted(feature, state, trait, cheerful)
2
listless(calm, quiet, cool, moderate)
2
long-suffering(calm, quiet, gentle, restrained)
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APASmart Define. (2015). serene thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/serene/thesaurus/synonyms
ChicagoSmart Define. 2015. "serene thesaurus" https://smartdefine.org/serene/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, serene thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/serene/thesaurus/synonyms>.
MLASmart Define. "serene thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/serene/thesaurus/synonyms>