| buttoned up(expression, adjective, close, quiet, soft) | |
| calmest | |
| cataleptic | |
| changeless | |
| clammed up(expression, adjective, close, quiet, soft) | |
| cloistered | |
| close(adjective, quiet, soft, low, peaceful) | |
| close-mouthed(adjective, close, quiet, soft, low) | |
| compliant(adjective, quiet, gentle, flat, indifferent) | |
| contemplative | |
| continuing | |
| cordial(adjective, quiet, gentle, subdued, yielding) | |
| could hear a pin drop(expression, adjective, idiom, close, quiet) | |
| deferential(adjective, quiet, gentle, subdued, yielding) | |
| defunct(dull, cold, lifeless, nonliving, inorganic) | |
| deterioration | |
| disengaged(adjective, dull, idle, sluggish, lazy) | |
| do nothing | |
| docile(adjective, quiet, gentle, flat, indifferent) | |
| down(dull, still, sluggish, lifeless, lazy) |
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| APA | Smart Define. (2015). quiescent thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/quiescent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "quiescent thesaurus" https://smartdefine.org/quiescent/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, quiescent thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/quiescent/thesaurus/synonyms>. |
| MLA | Smart Define. "quiescent thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/quiescent/thesaurus/synonyms> |