160 entries under rational topic. ×

12
discerning(adjective, clear, understanding, cool, sound)
12
discreet(adjective, calm, understanding, reasonable, moderate)
12
informed(adjective, understanding, sound, reasonable, keen)
11
attentive(adjective, understanding, reasonable, keen, certain)
11
sentient(adjective, understanding, open, cool, reasonable)
10
balanced(adjective, calm, sound, reasonable, reason)
10
knowing(adjective, understanding, sound, smooth, reasonable)
10
normal(adjective, sound, reasonable, natural)
10
percipient(adjective, understanding, cool, sound, keen)
10
valid(adjective, good, clear, open, sound)
9
cool(adjective, calm, good, sound, smooth)
9
enlightened(adjective, sound, reasonable, sharp, smart)
9
fair(adjective, good, clear, sound, reasonable)
9
level-headed(adjective, calm, sound, tough, reasonable)
9
plausible(adjective, clear, open, sound, reasonable)
8
lucid(adjective, clear, sound, reasonable)
8
pragmatic(adjective, hard, sound, tough, reasonable)
8
well-advised(adjective, good, sound, reasonable, fair)
7
conversant(adjective, understanding, cool, reasonable, keen)
7
matter-of-fact(adjective, hard, sound, reasonable)
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APASmart Define. (2016). sensible thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sensible/thesaurus/synonyms
ChicagoSmart Define. 2016. "sensible thesaurus" https://smartdefine.org/sensible/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sensible thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sensible/thesaurus/synonyms>.
MLASmart Define. "sensible thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/sensible/thesaurus/synonyms>