7 entries under difficult topic. ×

19
weighty(adjective, hard, complex)
18
burdensome(adjective, hard, complex)
18
hefty(adjective, hard, complex)
18
leaden(adjective, hard, complex)
18
lumpish(adjective, hard, complex)
18
ponderous(adjective, hard, complex)
18
rugged(adjective, hard, complex)
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APASmart Define. (2015). logged thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/logged/thesaurus/synonyms
ChicagoSmart Define. 2015. "logged thesaurus" https://smartdefine.org/logged/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, logged thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/logged/thesaurus/synonyms>.
MLASmart Define. "logged thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/logged/thesaurus/synonyms>