Synonyms|240Antonyms|15|Broader|2Narrower|0Related|137

64 entries under hard topic. ×

1
impervious(adjective, set, tough, solid)
1
impliable(adjective, firm, solid, stiff)
1
incompliant(adjective, firm, solid, tense)
1
inelastic(adjective, tough, firm, solid)
1
mechanical(adjective, firm, solid, tense)
1
numbed(adjective, firm, solid, tense)
1
refractory(adjective, tough, firm, solid)
1
resistant(adjective, firm, solid, tense)
1
rheumatic(adjective, firm, solid, tense)
1
starched(verb, adjective, firm, solid)
1
starchy(adjective, firm, solid, tense)
1
stark(adjective, firm, solid, tense)
1
steely(adjective, firm, solid, tense)
1
stony(adjective, firm, solid, stiff)
1
substantial(solid, rigid, density)
1
taut(adjective, firm, solid, stiff)
1
tense(adjective, firm, solid, stiff)
1
tight(adjective, firm, solid, stiff)
1
unbending(adjective, firm, solid, stiff)
1
unflexible(adjective, firm, solid, tense)
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ChicagoSmart Define. 2015. "solidified thesaurus" https://smartdefine.org/solidified/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, solidified thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solidified/thesaurus/synonyms>.
MLASmart Define. "solidified thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/solidified/thesaurus/synonyms>