89 entries under thoughtful topic. ×

7
psychological(adjective, intelligent, intellect, knowledgeable)
6
bright(adjective, smart, intelligent, brainy)
6
reflective(adjective, sound, reasonable, honest, sensible)
5
ruminative(adjective, reasonable, intelligent, sober)
4
subjective(adjective, reasonable, keen, heavy, intelligent)
3
composed(adjective, calm, quiet, sound, reasonable)
3
dispassionate(adjective, calm, sound, reasonable, sensible)
3
hard-boiled(adjective, calm, hard, sound, tough)
3
serene(adjective, calm, quiet, reasonable, sensible)
3
unexcited(adjective, calm, quiet, reasonable, sensible)
3
unruffled(adjective, calm, quiet, reasonable, sensible)
2
cogitative(adjective, reasonable, keen, sensible, deep)
2
contemplative(adjective, reasonable, keen, sensible, deep)
2
disciplined(adjective, calm, quiet, reasonable, sensible)
2
earnest(adjective, calm, quiet, reasonable, keen)
2
highbrow(smart, bright, intelligent, knowledgeable)
2
highbrowed(intelligent, knowledgeable)
2
imperturbable(adjective, calm, sensible, dark, restrained)
2
learned(adjective, intelligent, wise, moral)
2
no-nonsense(adjective, calm, quiet, reasonable, sharp)
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APASmart Define. (2016). rational thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/rational/thesaurus/synonyms
ChicagoSmart Define. 2016. "rational thesaurus" https://smartdefine.org/rational/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, rational thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/rational/thesaurus/synonyms>.
MLASmart Define. "rational thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/rational/thesaurus/synonyms>