- Definitions|1
- Thesaurus|190
- Abbreviations|0
| heart of stone(expression, idiom, insensibility) | |
| inaction(noun, quiet, serenity, quietness) | |
| inactivity(noun, quiet, serenity, quietness) | |
| indifference | |
| inexcitability | |
| insouciance | |
| integrity(order, orderliness, policing) | |
| keeping the peace(expression, idiom, order, orderliness, policing) | |
| law(order, orderliness, policing) | |
| law enforcement(expression, order, orderliness, policing) | |
| lawfulness(order, orderliness, policing) | |
| level-headedness(calmness, composure, equanimity) | |
| marble | |
| mental | |
| mental calmness(expression, idiom, excitability) | |
| moderation | |
| niceness(order, orderliness, policing) | |
| noiselessness(noun, quiet, serenity, quietness) | |
| nonchalance | |
| order(noun, calm, control, quiet, calmness) |
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| APA | Smart Define. (2015). imperturbation thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/imperturbation/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "imperturbation thesaurus" https://smartdefine.org/imperturbation/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, imperturbation thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/imperturbation/thesaurus/synonyms>. |
| MLA | Smart Define. "imperturbation thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/imperturbation/thesaurus/synonyms> |