102 entries under difficult topic. ×

1
dismaying(hard, great, tough, severe)
1
hairy(adjective, hard, tough, severe, rough)
1
headache(adjective, heavy, cruel, arduous)
1
intricate(adjective, tough, severe, awkward)
1
mean(adjective, hard, rough, heavy)
1
murder(adjective, hard, great, tough, rough)
1
no picnic(hard, tough, severe, painful)
1
overtaxing(adjective, heavy, arduous, burdensome)
1
plodding
1
responsible
1
sticky(adjective, tough, rough, heavy)
1
terrible(adjective, tough, severe, rough)
1
testing(adjective, tough, awkward, grim)
1
threatening(hard, tough, severe, offensive)
1
unsparing(adjective, tough, rough, harsh)
0
embittering
0
involved(adjective, tough, rough, heavy)
0
problematical(adjective, awkward, demanding, grueling)
0
scabrous(adjective, tough, rough, heavy)
0
slavish(adjective, tough, rough, heavy)
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APASmart Define. (2015). onerous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/onerous/thesaurus/synonyms
ChicagoSmart Define. 2015. "onerous thesaurus" https://smartdefine.org/onerous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, onerous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/onerous/thesaurus/synonyms>.
MLASmart Define. "onerous thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/onerous/thesaurus/synonyms>