129 entries under impassive topic. ×

5
aloof(adjective, calm, hard, indifferent, restrained)
5
cool(adjective, calm, indifferent, restrained, detached)
5
dispassionate(adjective, calm, sensible, cold, cruel)
5
down-to-earth(adjective, calm, hard, sound, simple)
5
hard-bitten(adjective, hard, tough, rough, harsh)
5
objective(adjective, hard, sound, tough, rational)
5
practical(adjective, calm, hard, sound, tough)
5
unconcerned(adjective, calm, hard, careless, indifferent)
4
detached(adjective, indifferent, distant, unfeeling, remote)
4
earthy(adjective, hard, sound, simple, tough)
4
passionless(adjective, detached, unresponsive, insensitive)
4
sober(adjective, calm, dull, hard, sound)
3
chill(adjective, bad, cold, detached, aloof)
3
impervious(noun, adjective, calm, bad, cold)
3
marble(adjective, bad, cold, detached, aloof)
3
rational(adjective, calm, hard, sound, tough)
3
severe(adjective, calm, strong, hard, tough)
3
stoic(adjective, tough, rational, straightforward, sober)
3
unidealistic(adjective, hard, sound, simple, tough)
2
cold fish(expression, adjective, calm, mean, hard)
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APASmart Define. (2016). hard-boiled thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard-boiled/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard-boiled thesaurus" https://smartdefine.org/hard-boiled/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, hard-boiled thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-boiled/thesaurus/synonyms>.
MLASmart Define. "hard-boiled thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/hard-boiled/thesaurus/synonyms>