Synonyms|512Antonyms|132|Broader|2Narrower|0Related|980

416 entries under adjective topic. ×

1
impenitent(hard, careless, indifferent, cruel)
1
impersonal(tough, rational, straightforward, sober)
1
imperturbable(calm, sensible, dark, cold)
1
impious(hard, unfeeling, unsympathetic, hardened)
1
inaccessible(hard, unfeeling, unsympathetic, hardened)
1
incurious(hard, indifferent, detached, distant)
1
indurated(hard, careless, indifferent, cruel)
1
inexorable(mean, strong, hard, tough)
1
inhibited(calm, sensible, dark, restrained)
1
insusceptible(hard, insensitive, unsusceptible)
1
iron(mean, hard, tough, harsh)
1
iron-hearted(bad, cold, aloof, no feelings)
1
irresponsive(bad, cold, aloof, no feelings)
1
irreverent(hard, unfeeling, unsympathetic, hardened)
1
laid-back(calm, restrained, detached, unconcerned)
1
laid back(expression, indifferent, detached, distant)
1
level-headed(reasonable, sharp, sensible, practical)
1
levelheaded(calm, hard, sound, tough)
1
lifeless(tough, rational, straightforward, sober)
1
listless(detached, impassive, unresponsive, laid-back)
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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>