74 entries under hard topic. ×

10
trying(adjective, dull, tough, severe)
8
nice(adjective, correct, severe, rough)
8
bothersome(adjective, tough, severe, difficult)
8
toilsome(adjective, tough, severe, difficult)
7
challenging(verb, adjective, tough, severe)
7
rough(adjective, tough, severe, difficult)
7
rugged(adjective, tough, severe, rough)
6
unyielding(adjective, tough, easy, severe)
6
weighty(adjective, severe, difficult, harsh)
5
inflexible(adjective, severe, rough, difficult)
5
knotty(adjective, tough, severe, rough)
5
uphill(adjective, tough, severe, rough)
4
clamorous(adjective, tough, firm, difficult)
4
exhausting(adjective, dull, tough, difficult)
4
insistent(adjective, tough, firm, difficult)
4
mean(adjective, severe, rough, difficult)
4
painful(tough, severe, difficult, harsh)
4
urgent(adjective, tough, firm, difficult)
4
wearing(adjective, dull, tough, difficult)
3
ambitious(adjective, tough, severe, ability)
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APASmart Define. (2015). demanding thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/demanding/thesaurus/synonyms
ChicagoSmart Define. 2015. "demanding thesaurus" https://smartdefine.org/demanding/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, demanding thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/demanding/thesaurus/synonyms>.
MLASmart Define. "demanding thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/demanding/thesaurus/synonyms>