260 entries under adjective topic. ×

1
drab(dull, lead, grim, leaden)
1
dusky(dull, lead, grim, leaden)
1
dusty(dull, lead, grim, leaden)
1
exacting(persistent, obstinate, insistent, dogged)
1
fixed(mean, strong, hard, tough)
1
formidable
1
fortified(strong, solid, stable, sure)
1
freck
1
froward(persistent, obstinate, insistent, dogged)
1
full-bodied
1
full bodied
1
generous
1
gutsy
1
hale
1
hale and hearty
1
hanging tough(expression, mean, hard, rigid)
1
hard-and-fast(set, hard, stiff, rigid)
1
hard-boiled(mean, hard, tough, harsh)
1
hard-hearted(mean, hard, tough, harsh)
1
hard-line(persistent, obstinate, insistent, dogged)
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APASmart Define. (2015). iron thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/iron/thesaurus/synonyms
ChicagoSmart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, iron thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>.
MLASmart Define. "iron thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms>