80 entries under reasonable topic. ×

1
levelheaded(adjective, sound, keen, sensible)
1
likely
1
normal(sound, sensible, reasoning, intellectual)
1
objective(sound, plan, sensible, picture)
1
perspicacious(sound, smart, bright, sensible)
1
philosophic(adjective, sound, keen, sensible)
1
preoccupied(adjective, keen, deep, rational)
1
rapt(adjective, keen, deep, thoughtful)
1
retrospective(adjective, keen, deep, rational)
0
together(sound, smart, bright, sensible)
0
balanced(sound, sensible, reasoning, intellectual)
0
collected(sound, sensible, reasoning, intellectual)
0
deliberate(sound, sensible, reasoning, intellectual)
0
far-sighted(sound, sensible, reasoning, intellectual)
0
impartial(sound, sensible, reasoning, intellectual)
0
realistic(sound, sensible)
0
sagacious(sound, sensible, reasoning, intellectual)
0
stable(sound, sensible, reasoning, intellectual)
0
synthetic(sound, sensible, reasoning, intellectual)
0
well-advised(sound, sensible, reasoning, intellectual)
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APASmart Define. (2016). thinking thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/thinking/thesaurus/synonyms
ChicagoSmart Define. 2016. "thinking thesaurus" https://smartdefine.org/thinking/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, thinking thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/thinking/thesaurus/synonyms>.
MLASmart Define. "thinking thesaurus" 11 February 2016. Web. 22 September 2026. <https://smartdefine.org/thinking/thesaurus/synonyms>