113 entries under reasonable topic. ×

1
quiet(adjective, calm, clear, smooth)
1
ratiocinative(adjective, clear, sound, sensible)
1
relevant(clear, sound, sensible, rational)
1
sagacious(sound, sensible, rational, healthy)
1
sedate(adjective, calm, quiet, sensible)
1
severe(adjective, calm, quiet, sensible)
1
soft(adjective, calm, quiet, smooth)
1
solemn(adjective, calm, quiet, sensible)
1
somber(adjective, calm, quiet, sensible)
1
staid(adjective, calm, quiet, sensible)
1
steady(adjective, calm, quiet, sound)
1
subdued(adjective, calm, quiet, sensible)
1
subtle(clear, sound, sensible, rational)
1
toned down(expression, adjective, calm, quiet)
1
unexcited(adjective, calm, quiet, sensible)
1
unimpassioned(adjective, calm, quiet, sensible)
1
unruffled(adjective, calm, quiet, sensible)
1
well-organized(clear, sound, sensible, rational)
0
cerebral(sound, sensible, reasoning, intellectual)
0
cognitive(sound, sensible, reasoning, intellectual)
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APASmart Define. (2016). lucid thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lucid/thesaurus/synonyms
ChicagoSmart Define. 2016. "lucid thesaurus" https://smartdefine.org/lucid/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, lucid thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lucid/thesaurus/synonyms>.
MLASmart Define. "lucid thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/lucid/thesaurus/synonyms>