- Definitions|1
- Thesaurus|244
- Abbreviations|0
| nonchalance | |
| nonreactive(adjective, dead, insensitive, insusceptible) | |
| oblivious(cold, indifferent, unyielding) | |
| placid(adjective, dull, quiet, flat, heavy) | |
| quiet(adjective, dull, flat, heavy, dead) | |
| regular(adjective, dull, quiet, flat, heavy) | |
| resolute(cold, indifferent, unyielding) | |
| sacrosanct | |
| sheathe | |
| slack(adjective, dull, quiet, flat, heavy) | |
| stagnant(adjective, dull, quiet, flat, heavy) | |
| stalemate | |
| stalemates | |
| staunch(cold, indifferent, unyielding) | |
| steadfast(cold, indifferent, unyielding) | |
| still(adjective, dull, quiet, flat, heavy) | |
| stoical(cold, indifferent, unyielding) | |
| stony(hard, cold, indifferent, insensitive, unyielding) | |
| tactless(hard, insensitive, unsusceptible) | |
| torpid(adjective, dull, quiet, flat, heavy) |
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| APA | Smart Define. (2015). impassible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impassible/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impassible thesaurus" https://smartdefine.org/impassible/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, impassible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impassible/thesaurus/synonyms>. |
| MLA | Smart Define. "impassible thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/impassible/thesaurus/synonyms> |