192 entries under sober topic. ×

1
justifiable(adjective, sound, sensible, rational, intelligent)
1
matter-of-fact(adjective, calm, reasonable, rational, detached)
1
no-nonsense(adjective, calm, tough, sharp, sensible)
1
nondiscriminatory(adjective, calm, detached, unfeeling)
1
nowhere(adjective, detached, blank, unfeeling)
1
observant(adjective, deliberate, alert, significant, familiar)
1
perceiving(adjective, sound, sensible, rational, intelligent)
1
percipient(adjective, sound, sensible, significant, familiar)
1
plausible(adjective, sound, sensible, rational, intelligent)
1
poker face(expression, adjective, detached, blank)
1
punctilious(thoughtful, cautious, prudent, wary)
1
ratiocinative(adjective, sound, reasonable, sensible, rational)
1
reasoned(adjective, sound, reasonable, sensible, rational)
1
reasoning(adjective, sound, reasonable, sensible, rational)
1
reflective(adjective, sound, reasonable, sensible, rational)
1
right(adjective, kind, pleasant, friendly, sensible)
1
sage(adjective, smooth, reasonable, sharp, smart)
1
set(adjective, mean, firm, solid, certain)
1
shrewd(reasonable, sharp, significant, wise)
1
solicitous(adjective, understanding, kind, deliberate, sympathetic)
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APASmart Define. (2016). cool thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/cool/thesaurus/synonyms
ChicagoSmart Define. 2016. "cool thesaurus" https://smartdefine.org/cool/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, cool thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/cool/thesaurus/synonyms>.
MLASmart Define. "cool thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/cool/thesaurus/synonyms>