Synonyms|94Antonyms|45|Broader|2Narrower|0Related|108
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gentleness(calmness, serenity, tranquillity)
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good-naturedness(calmness, serenity, tranquillity)
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immobility
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impassivity(calm, quiet, rest, calmness, composure)
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imperturbability(calmness, serenity, tranquillity)
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imperturbation(calm, quiet, rest, calmness, composure)
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inaction(quiet, calmness, serenity, tranquillity, quietness)
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kindness
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languidness
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lethargy
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level-headedness(calmness, composure, equanimity)
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lifelessness
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listlessness
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motionless
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motionlessness
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noiselessness(quiet, calmness, serenity, tranquillity, quietness)
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passiveness
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passivity
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patience(calm, quiet, rest, calmness, composure)
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peaceableness
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APASmart Define. (2015). placidness thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/placidness/thesaurus/synonyms
ChicagoSmart Define. 2015. "placidness thesaurus" https://smartdefine.org/placidness/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, placidness thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/placidness/thesaurus/synonyms>.
MLASmart Define. "placidness thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/placidness/thesaurus/synonyms>