- Definitions|1
- Thesaurus|147
- Abbreviations|0
| imperturbable(adjective, calm, collected, jittery) | |
| unflappable(adjective, calm, strong) | |
| calm(adjective, strong) | |
| certain(adjective, calm, strong) | |
| collected(adjective, calm, strong) | |
| cool as cucumber(expression, idiom, jittery) | |
| disimpassioned | |
| easy(adjective, calm, strong) | |
| easygoing(adjective, calm, strong) | |
| firm(adjective, calm, strong) | |
| hard as nails(expression, idiom, jittery) | |
| insensitive(adjective, calm, strong) | |
| laid-back(adjective, calm, strong) | |
| nerveless | |
| roll with punches(expression, idiom, jittery) | |
| safe(adjective, calm, strong) | |
| stable(adjective, calm, strong) | |
| stoical | |
| strong(adjective, calm) | |
| sure(adjective, calm, strong) |
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| APA | Smart Define. (2015). perturbable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/perturbable/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "perturbable thesaurus" https://smartdefine.org/perturbable/thesaurus/antonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, perturbable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/perturbable/thesaurus/antonyms>. |
| MLA | Smart Define. "perturbable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/perturbable/thesaurus/antonyms> |