1,209 entry under adjective topic. ×

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demanding(dull, tough, easy, severe)
22
stale(difficult, complex, dry, bare)
21
austere(strong, tough, severe, rough)
21
ambitious(ability, difficult, complex, effort)
21
burly(difficult, complex)
21
grim(person, mean, strong, tough)
21
problematic(difficult, delicate, complex, tricky)
21
stony(mean, cool, tough, severe)
21
weighty(difficult, heavy, complex)
20
disturbing(mean, severe, difficult, harsh)
20
labyrinthine(difficult, complex, involved, tricky)
20
leaden(difficult, complex)
20
merciless(mean, tough, severe, evil)
20
ponderous(difficult, complex)
20
strict(strong, tough, easy, severe)
20
troubled(rough, difficult, complex, painful)
19
flinty(strong, tough, severe, evil)
19
Gordian(difficult, complex, intricate, thorny)
19
byzantine(difficult, complex, involved, complicated)
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elaborate(difficult, complex, grand, involved)
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APASmart Define. (2016). hard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, hard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>.
MLASmart Define. "hard thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms>