144 entries under rational topic. ×

34
serious(adjective, characteristic, calm, dull, quiet)
23
calm(adjective, quiet, cool, sound, tough)
20
reasonable(adjective, calm, good, dull, quiet)
19
cool(adjective, calm, good, dull, quiet)
18
moderate(adjective, calm, quiet, sound, reasonable)
17
steady(adjective, calm, dull, cool, sound)
16
realistic(adjective, calm, dull, hard, sound)
16
sane(adjective, hard, sound, reasonable, sensible)
15
sound(adjective, calm, good, dull, hard)
14
collected(adjective, calm, dull, quiet, cool)
13
sensible(adjective, good, hard, sound, reasonable)
11
dry(adjective, calm, cool, tough, restrained)
11
dull(adjective, quiet, tough, colour, severe)
11
judicious(adjective, good, sound, reasonable, sensible)
11
thoughtful(adjective, good, dull, quiet, sound)
9
down-to-earth(adjective, calm, dull, hard, sound)
9
practical(adjective, calm, dull, hard, sound)
9
self-possessed(adjective, sound, firm, sensible, solid)
9
stoic(adjective, cool, tough, straightforward)
8
level-headed(adjective, sound, tough, reasonable, sharp)
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APASmart Define. (2015). sober thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sober/thesaurus/synonyms
ChicagoSmart Define. 2015. "sober thesaurus" https://smartdefine.org/sober/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, sober thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sober/thesaurus/synonyms>.
MLASmart Define. "sober thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/sober/thesaurus/synonyms>