140 entries under relaxed topic. ×

15
even-tempered(adjective, calm, quiet, smooth, mild)
13
self-possessed(adjective, calm, quiet, cool, mild)
13
soft(adjective, calm, quiet, light, kind)
12
dispassionate(adjective, calm, quiet, cool, reasonable)
11
at ease(expression, adjective, idiom, calm, quiet)
11
comfortable(adjective, calm, quiet, light, smooth)
10
impassive(adjective, calm, quiet, cool)
10
self-controlled(adjective, calm, quiet, casual)
10
unagitated(adjective, calm, quiet, restrained)
9
unexcited(adjective, calm, quiet, cool)
9
unflappable(adjective, calm, quiet, cool, smooth)
8
good-natured(adjective, calm, kind, smooth, soft)
8
staid(adjective, calm, cool, easygoing)
7
detached(adjective, calm, quiet, cool, mild)
7
languid(adjective, feature, state, calm, quiet)
7
lenient(adjective, calm, quiet, kind, soft)
7
nonchalant(adjective, feature, state, calm, quiet)
6
patient(adjective, calm, quiet, cool, kind)
6
pleasant(adjective, calm, quiet, clear, light)
6
poised(adjective, calm, quiet, cool, mild)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 26 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>