92 entries under restrained topic. ×

6
pleasant(adjective, calm, quiet, clear, light)
6
reasonable(adjective, calm, quiet, soft, gentle)
5
bland(adjective, calm, quiet, cool, kind)
5
easy-going(adjective, feature, state, calm, quiet)
5
neutral(adjective, calm, quiet, cool, smooth)
5
reserved(adjective, calm, quiet, soft, reasonable)
4
indifferent(adjective, feature, state, reasonable, sensible)
4
measured(adjective, calm, quiet, soft, reasonable)
4
stoical(adjective, calm, quiet, cool, gentle)
4
tame(adjective, calm, quiet, kind, soft)
3
disciplined(adjective, calm, quiet, reasonable, moderate)
3
rational(adjective, reasonable, sensible, modest)
3
tolerant(adjective, feature, state, calm, reasonable)
2
balanced(adjective, calm, soft, reasonable, gentle)
2
inconsiderable(adjective, calm, light, simple, soft)
2
judicious(adjective, calm, soft, reasonable, gentle)
2
low-key(adjective, calm, quiet, cool, smooth)
2
modest(adjective, reasonable, sensible, temperate)
2
sensible(adjective, calm, reasonable, relaxed)
1
accommodating(adjective, calm, quiet, gentle, informal)
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APASmart Define. (2016). tranquil thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tranquil/thesaurus/synonyms
ChicagoSmart Define. 2016. "tranquil thesaurus" https://smartdefine.org/tranquil/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, tranquil thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tranquil/thesaurus/synonyms>.
MLASmart Define. "tranquil thesaurus" 3 March 2016. Web. 24 September 2026. <https://smartdefine.org/tranquil/thesaurus/synonyms>