Synonyms|555Antonyms|160|Broader|1Narrower|0Related|403

277 entries under adjective topic. ×

1
earnest
1
faithful
1
fearless
1
frowning(strong, hard, tough, severe)
1
frozen(hard, firm, solid, tense)
1
graceless(hard, firm, solid, tense)
1
hang-tough(strong, hard, tough, severe)
1
hard-and-fast(set, hard, stiff, rigid)
1
hard-line(strong, hard, tough, severe)
1
hard-nosed(strong, hard, tough, severe)
1
hard-shell(strong, hard, tough, severe)
1
hardheaded(strong, hard, tough, severe)
1
hostile(unfriendly, aloof, distant, standoffish)
1
immalleable(hard, firm, solid, stiff)
1
imperturbable(cold, cruel, unfeeling, unsympathetic)
1
impregnable
1
indefatigable
1
inhuman(cold, cruel, unfeeling, unsympathetic)
1
insensible(strong, hard, tough, dead)
1
insistent
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ChicagoSmart Define. 2015. "steely thesaurus" https://smartdefine.org/steely/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, steely thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/steely/thesaurus/synonyms>.
MLASmart Define. "steely thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/steely/thesaurus/synonyms>