58 entries under difficult topic. ×

19
unbearable(adjective, hard, complex)
18
operose(adjective, hard, complex)
18
painful(adjective, hard, complex)
18
precarious(adjective, hard, complex)
14
critical(adjective, hard, hurt, great, tough)
13
onerous(adjective, harsh, heavy, demanding)
9
urgent(adjective, clear, hard, great, tough)
8
pressing(verb, adjective, hard, tough, severe)
7
exigent(adjective, hard, tough, harsh)
6
demanding(adjective, hard, severe, harsh)
6
exacting(adjective, hard, severe, harsh)
3
superincumbent(adjective, heavy, cruel, demanding)
3
worrisome(adjective, troublesome)
3
worrying(adjective, severe, heavy, troublesome)
2
importunate(hard, tough, big, significant)
2
stringent(adjective, good, strong, hard, sound)
2
troublesome(adjective, hard, tough, severe)
1
crushing(adjective, severe, sharp, harsh)
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APASmart Define. (2015). weighty thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/weighty/thesaurus/synonyms
ChicagoSmart Define. 2015. "weighty thesaurus" https://smartdefine.org/weighty/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, weighty thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/weighty/thesaurus/synonyms>.
MLASmart Define. "weighty thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/weighty/thesaurus/synonyms>