75 entries under sober topic. ×

5
unfeeling(adjective, calm, tough, indifferent, detached)
4
aloof(adjective, calm, fair, indifferent, detached)
4
hard-boiled(adjective, hard, sound, tough, rational)
4
uninvolved(noun, adjective, calm, fair, indifferent)
3
apathetic(adjective, tough, indifferent, rational, straightforward)
3
nondiscriminatory(adjective, calm, reasonable, friendly, appropriate)
2
abstract(adjective, calm, indifferent, detached, casual)
2
dull(adjective, tough, rational, straightforward)
2
prosaic(adjective, hard, sound, tough, excite)
2
tough(adjective, calm, detached, unfeeling)
2
unimpassioned(adjective, tough, rational, straightforward)
2
unvarnished(adjective, tough, rational, straightforward)
1
calm(adjective, sound, tough, reasonable, sensible)
1
cold-fish(adjective, calm, detached, unfeeling)
1
collected(adjective, calm, sound, reasonable, sensible)
1
composed(adjective, calm, detached, unfeeling)
1
cool cat(expression, adjective, calm, detached)
1
deadpan(adjective, tough, rational, straightforward, detached)
1
down-to-earth(adjective, hard, sound, tough, excite)
1
dry(adjective, tough, rational, straightforward)
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APASmart Define. (2016). objective thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/objective/thesaurus/synonyms
ChicagoSmart Define. 2016. "objective thesaurus" https://smartdefine.org/objective/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, objective thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/objective/thesaurus/synonyms>.
MLASmart Define. "objective thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/objective/thesaurus/synonyms>