73 entries under difficulty topic. ×

2
taxing(adjective, characteristic, pain)
2
tiring(adjective, characteristic, pain)
2
toilsome(adjective, characteristic, pain)
2
tough(adjective, characteristic, pain)
2
troublesome(adjective, characteristic, pain)
2
trying(adjective, characteristic, pain)
2
tyrannical(adjective, characteristic, pain)
2
unnatural(adjective, characteristic, pain)
2
unrelenting(adjective, characteristic, pain)
2
uphill(adjective, characteristic, pain)
2
vengeful(adjective, characteristic, pain)
2
vicious(adjective, characteristic, pain)
2
wicked(adjective, characteristic, pain)
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APASmart Define. (2015). allergic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/allergic/thesaurus/related
ChicagoSmart Define. 2015. "allergic thesaurus" https://smartdefine.org/allergic/thesaurus/related (accessed September 24, 2026).
HarvardSmart Define 2015, allergic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/allergic/thesaurus/related>.
MLASmart Define. "allergic thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/allergic/thesaurus/related>