36 entries under tranquil topic. ×

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placid(calm, peaceful)
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poised(adjective, calm, smooth, still, peaceful)
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quiescent(calm, smooth, peaceful, comfortable)
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quiet(calm, peaceful)
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reconciled(adjective, calm, clear, smooth, still)
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resting(adjective, calm, clear, smooth, still)
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satisfied(calm, peaceful)
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sedate(calm, peaceful)
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self-possessed(calm, peaceful, laid-back, unflappable)
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smooth(adjective, calm, clear, fine, thin)
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still(adjective, calm, smooth, peaceful)
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stoical(adjective, calm, clear, smooth, still)
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undisturbed(calm, peaceful)
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unflappable(calm, peaceful, laid-back)
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unruffled(calm, peaceful)
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untroubled(adjective, calm, smooth, still, peaceful)
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APASmart Define. (2016). pellucid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/pellucid/thesaurus/synonyms
ChicagoSmart Define. 2016. "pellucid thesaurus" https://smartdefine.org/pellucid/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, pellucid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/pellucid/thesaurus/synonyms>.
MLASmart Define. "pellucid thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/pellucid/thesaurus/synonyms>