144 entries under rational topic. ×

1
absorbed(adjective, reasonable, keen, deep)
1
advisable(adjective, good, sound, reasonable, sensible)
1
analytical(adjective, sound, reasonable, keen, sensible)
1
apathetic(adjective, calm, cool, tough)
1
arguable(adjective, sound, sensible, intelligent)
1
believable(adjective, sound, sensible, intelligent)
1
brainy(adjective, reasonable, keen, deep)
1
cerebral(adjective, sound, reasonable, sensible)
1
clear-cut(adjective, sound, sensible, intelligent)
1
cold-blooded(adjective, calm, cool, tough)
1
compos mentis(expression, adjective, sound, sensible)
1
conscious(adjective, sound, reasonable, sensible)
1
consequent(adjective, good, sound, reasonable, sensible)
1
consistent(adjective, sound, sensible, intelligent)
1
credible(adjective, sound, sensible, intelligent)
1
deadpan(adjective, dull, quiet, set, cool)
1
discriminating(adjective, sound, reasonable, sensible)
1
earthy(adjective, hard, sound, tough, reasonable)
1
emotionless(adjective, tough, straightforward, unfeeling)
1
engrossed(adjective, reasonable, keen, deep)
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APASmart Define. (2015). sober thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sober/thesaurus/synonyms
ChicagoSmart Define. 2015. "sober thesaurus" https://smartdefine.org/sober/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, sober thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sober/thesaurus/synonyms>.
MLASmart Define. "sober thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/sober/thesaurus/synonyms>