69 entries under rational topic. ×

11
unemotional(adjective, calm, cool, tough)
9
composed(adjective, calm, quiet, reasonable, moderate)
7
collected(adjective, calm, quiet, reasonable, moderate)
6
sober(adjective, calm, dull, cool, tough)
6
unexcited(adjective, calm, quiet, reasonable, sensible)
5
cold(adjective, calm, cool, tough, dark)
5
emotionless(adjective, cool, tough, straightforward)
5
sedate(adjective, calm, quiet, reasonable, sensible)
4
impassive(adjective, calm, cool, tough, restrained)
4
matter-of-fact(adjective, cool, straightforward, detached)
3
calm(adjective, cool, tough, reasonable, moderate)
3
cold-blooded(adjective, cool, tough, straightforward)
3
imperturbable(adjective, calm, sensible, dark, restrained)
2
dry(adjective, tough, straightforward, sober)
2
dull(adjective, tough, straightforward, sober)
2
flat(adjective, cool, tough, straightforward)
2
impersonal(adjective, cool, tough, straightforward)
2
mundane(adjective, tough, straightforward, sober)
2
objective(adjective, tough, straightforward, sober)
2
plain(adjective, calm, tough, dark, restrained)
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APASmart Define. (2015). unimpassioned thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unimpassioned/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimpassioned thesaurus" https://smartdefine.org/unimpassioned/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unimpassioned thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unimpassioned/thesaurus/synonyms>.
MLASmart Define. "unimpassioned thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/unimpassioned/thesaurus/synonyms>