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

416 entries under adjective topic. ×

1
flinty(strong, hard, tough, severe)
1
forbidding(person, strong, hard, tough)
1
forgoing(calm, sensible, dark, restrained)
1
frowning(strong, hard, tough, severe)
1
going with the flow(expression, idiom, detached, impassive)
1
grave(calm, sensible, dark, restrained)
1
grim(strong, hard, tough, severe)
1
habituated(hard, unfeeling, unsympathetic, hardened)
1
hang-tough(strong, hard, tough, severe)
1
hanging tough(expression, mean, hard, stubborn)
1
hard-as-nails(hard, unfeeling, unsympathetic, hardened)
1
hard-core(strong, hard, tough, severe)
1
hard-shell(strong, hard, tough, severe)
1
hard as nails(expression, idiom, hard, tough)
1
hardbitten
1
haughty(indifferent, detached, distant, remote)
1
headstrong
1
immovable(mean, strong, hard, tough)
1
impassive(calm, hard, tough, careless)
1
impenetrable(hard, unfeeling, unsympathetic, hardened)
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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>