Synonyms|423Antonyms|32|Broader|7Narrower|13Related|105

93 entries under hard topic. ×

1
refractory(adjective, firm, solid, tense)
1
resistant(adjective, firm, solid, tense)
1
rheumatic(adjective, firm, solid, stiff)
1
set in stone(expression, adjective, idiom, set, mean)
1
solid(adjective, set, firm, stiff)
1
starched(verb, adjective, firm, solid)
1
starchy(adjective, firm, solid, tense)
1
stark(adjective, firm, solid, tense)
1
stony(adjective, firm, solid, stiff)
1
strong(adjective, set, firm, solid)
1
taut(adjective, firm, solid, stiff)
1
tense(adjective, firm, solid, stiff)
1
thick(adjective, firm, solid, stiff)
1
thickened(adjective, firm, solid, tense)
1
tight(adjective, firm, solid, stiff)
1
tough nut to crack(expression, adjective, idiom, mean)
1
uncompassionate(adjective, mean, tough, harsh)
1
uncooperative(adjective, mean, tough, harsh)
1
unflexible(adjective, firm, solid, stiff)
1
ungraceful(adjective, firm, solid, tense)
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HarvardSmart Define 2015, indurate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/indurate/thesaurus/synonyms>.
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