251 entries under reasonable topic. ×

1
right(adjective, good, sound, sensible)
1
serious(adjective, keen, sensible, deep)
1
shrewd(adjective, tough, sharp, sensible)
1
spontaneous(ordinary, usual, normal, legitimate)
1
studious(adjective, sound, keen, solid)
1
subjective(adjective, keen, deep, rational)
1
true(adjective, good, sound, right)
1
typic(ordinary, usual, normal, legitimate)
1
uncontrolled(ordinary, usual, normal, legitimate)
1
wistful(adjective, keen, deep, rational)
1
witting(adjective, rational, sober, wise)
0
accredited(sensible, natural, normal, valid)
0
accurate(sound, rational, systematic, technical)
0
allowable(tolerable, permissible, justified, defensible)
0
attested(good, sound, right, rational)
0
au courant(expression, sober, realistic, sane)
0
authentic(good, sound, right, rational)
0
bona fide(expression, good, sound, right)
0
certain(sensible, natural, valid, lawful)
0
cognizant(sensible, rational, stable, sober)
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APASmart Define. (2015). logical thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/logical/thesaurus/synonyms
ChicagoSmart Define. 2015. "logical thesaurus" https://smartdefine.org/logical/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, logical thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/logical/thesaurus/synonyms>.
MLASmart Define. "logical thesaurus" 19 October 2015. Web. 24 September 2026. <https://smartdefine.org/logical/thesaurus/synonyms>