195 entries under reasonable topic. ×

5
intuitive(adjective, sound, keen, sharp)
5
levelheaded(adjective, calm, good, sound)
5
realistic(adjective, sound, sensible, rational)
5
ruminative(adjective, informal, rational, thoughtful)
5
thinking(adjective, sound, keen, smart)
5
valid(clear, sound, sensible, rational)
5
wary(adjective, sharp, sensible, lively)
4
circumspect(adjective, sharp, sensible, lively)
4
cogent(adjective, clear, sound, sensible)
4
conversant(adjective, understanding, cool, smart)
4
feasible(adjective, right, appropriate, proper)
4
likely(adjective, right, appropriate, proper)
4
normal(adjective, sound, sensible, rational)
4
philosophic(adjective, sound, keen, sensible)
4
plausible(adjective, clear, sound, sensible)
4
right(adjective, sound, appropriate, sensible)
4
seemly(adjective, right, appropriate, sensible)
4
sentient(adjective, understanding, cool, knowledge)
4
vigilant(adjective, understanding, cool, sharp)
4
well-informed(adjective, cool, smart, bright)
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APASmart Define. (2016). wise thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/wise/thesaurus/synonyms
ChicagoSmart Define. 2016. "wise thesaurus" https://smartdefine.org/wise/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, wise thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/wise/thesaurus/synonyms>.
MLASmart Define. "wise thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/wise/thesaurus/synonyms>