73 entries under reasonable topic. ×

1
farsighted(adjective, keen, deep, rational)
1
grave(adjective, keen, deep, rational)
1
impartial(sound, sensible, intellectual, mental)
1
intent(adjective, keen, deep, rational)
1
keen(adjective, deep, rational, thoughtful)
1
knowing(noun, adjective, understanding, sound)
1
levelheaded(adjective, sound, sensible, rational)
1
lost in thought(expression, adjective, idiom, sober)
1
meditative(adjective, keen, deep, rational)
1
melancholy(adjective, keen, deep, rational)
1
museful(adjective, keen, deep, rational)
1
objective(sound, sensible, intellectual, mental)
1
pensive(adjective, keen, deep, rational)
1
perspicacious(sound, sensible, intellectual, mental)
1
philosophic(adjective, sound, keen, sensible)
1
preoccupied(adjective, keen, deep, rational)
1
prudent(sound, sensible, intellectual, mental)
1
rapt(adjective, keen, deep, rational)
1
retrospective(adjective, keen, deep, rational)
1
serious(adjective, keen, deep, rational)
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APASmart Define. (2015). reasoning thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/reasoning/thesaurus/synonyms
ChicagoSmart Define. 2015. "reasoning thesaurus" https://smartdefine.org/reasoning/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, reasoning thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/reasoning/thesaurus/synonyms>.
MLASmart Define. "reasoning thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/reasoning/thesaurus/synonyms>