29 entries under heavy topic. ×

6
difficult(adjective, hard, tough, difficulty, rough)
2
backbreaking(adjective, strong, hard, rough, difficult)
2
exhausting(adjective, tough, rough, difficult)
2
rough(adjective, tough, difficult, awkward)
2
severe(adjective, tough, rough, difficult)
2
tiring(adjective, tough, rough, difficult)
2
wearying(adjective, tough, rough, difficult)
1
fatiguing(adjective, hard, tough, rough, difficult)
1
irksome(adjective, tough, difficulty, rough, difficult)
1
mean(adjective, tough, rough, difficult)
1
rugged(adjective, strong, tough, rough, difficult)
1
toilful(adjective, tough, rough, difficult)
1
wearing(adjective, hard, tough, rough, difficult)
0
complicated(adjective, tough, rough, difficult)
0
distressing(adjective, tough, rough, difficult)
0
grinding(adjective, tough, rough, difficult)
0
hairy(adjective, tough, rough, difficult)
0
involved(adjective, tough, rough, difficult)
0
knotty(adjective, tough, rough, difficult)
0
merciless(adjective, tough, rough, difficult)
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APASmart Define. (2013). herculean thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/herculean/thesaurus/synonyms
ChicagoSmart Define. 2013. "herculean thesaurus" https://smartdefine.org/herculean/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, herculean thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/herculean/thesaurus/synonyms>.
MLASmart Define. "herculean thesaurus" 28 June 2013. Web. 30 September 2026. <https://smartdefine.org/herculean/thesaurus/synonyms>