10 entries under difficult topic. ×

9
laborious(adjective, hard, profound)
4
severe(adjective, harsh)
3
strenuous
3
tough(adjective, laborious)
3
uphill(adjective, laborious)
2
murderous
2
rugged(adjective, rigorous)
2
sticky(adjective, dry, embarrassing)
2
weighty(adjective, light, troublesome)
0
exigent(adjective, taxing)
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APASmart Define. (2016). facile thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/facile/thesaurus/antonyms
ChicagoSmart Define. 2016. "facile thesaurus" https://smartdefine.org/facile/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, facile thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/facile/thesaurus/antonyms>.
MLASmart Define. "facile thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/facile/thesaurus/antonyms>