155 entries under gentle topic. ×

12
even(adjective, adverb, calm, quiet, smooth)
10
controlled(adjective, calm, quiet, cool, soft)
10
steady(adjective, calm, quiet, cool, smooth)
9
balmy(adjective, calm, quiet, clear, kind)
9
soothing(adjective, calm, quiet, cool, smooth)
8
agreeable(adjective, calm, quiet, smooth, moderate)
8
good-natured(adjective, calm, kind, smooth, soft)
8
subdued(adjective, calm, quiet, kind, smooth)
7
lenient(adjective, calm, quiet, kind, soft)
7
restrained(adjective, calm, quiet, soft, reasonable)
7
stable(adjective, calm, quiet, smooth, soft)
6
patient(adjective, calm, quiet, cool, kind)
6
reasonable(adjective, calm, quiet, soft)
6
silent(adjective, calm, quiet, smooth)
5
bland(adjective, calm, quiet, cool, kind)
5
easy-going(adjective, feature, state, calm, quiet)
5
meek(adjective, calm, quiet, kind, smooth)
5
mellow(adjective, calm, quiet, kind, smooth)
5
regular(adjective, calm, quiet, smooth, soft)
5
reserved(adjective, calm, quiet, soft, reasonable)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 27 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>