146 entries under serene topic. ×
| hardened(adjective, cool, blank, aloof, unemotional) | |
| harmonious(adjective, calm, quiet, cool, smooth) | |
| heartless(adjective, cool, blank, aloof, unemotional) | |
| hushed(adjective, calm, quiet, cool, easy) | |
| inactive(adjective, quiet, cool, indifferent, still) | |
| indurated(adjective, cool, blank, aloof, unemotional) | |
| inexcitable(adjective, cool, blank, aloof, unemotional) | |
| inexpressive(adjective, cool, blank, aloof, unemotional) | |
| inscrutable(adjective, quiet, cool, moderate, gentle) | |
| insensible(adjective, cool, blank, aloof, unemotional) | |
| insusceptible(adjective, cool, blank, aloof, unemotional) | |
| irenic(calm, quiet, friendly, mild, easygoing) | |
| keeping a stiff upper lip(expression, adjective, idiom, calm, relaxed) | |
| mellow(adjective, calm, quiet, cool, smooth) | |
| neutralist(calm, quiet, friendly) | |
| no-nonsense(adjective, calm, quiet, cool, reasonable) | |
| nonbelligerent(calm, quiet, friendly, detached, unconcerned) | |
| nonviolent(calm, quiet, friendly) | |
| not turn a hair(expression, adjective, idiom, calm, relaxed) | |
| on friendly terms(expression, idiom, calm, quiet, friendly) |
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| APA | Smart Define. (2015). collected thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/collected/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "collected thesaurus" https://smartdefine.org/collected/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, collected thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/collected/thesaurus/synonyms>. |
| MLA | Smart Define. "collected thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/collected/thesaurus/synonyms> |