67 entries under tough topic. ×

6
trying(noun, verb, adjective, meet)
2
demanding(adjective, severe, difficult, violent)
2
effortful(adjective, difficult, awkward, grim)
2
exacting(adjective, severe, difficult, violent)
2
hard(adjective, severe, difficult, violent)
2
laborious(adjective, severe, difficult, violent)
1
arduous(adjective, severe, difficult, violent)
1
burdensome(adjective, difficult, awkward, grim)
1
challenging(verb, adjective, difficult, awkward)
1
difficult(adjective, unhappy, awkward, grim)
1
grim(adjective, problematic, trying)
1
grueling(adjective, difficult, awkward, grim)
1
heavy(adjective, severe, difficult, violent)
1
intractable(problematic, trying)
1
onerous(adjective, difficult, awkward, grim)
1
severe(adjective, difficult, violent, awkward)
1
strenuous(adjective, severe, difficult, violent)
1
taxing(adjective, severe, difficult, violent)
1
uphill(adjective, severe, difficult, violent)
0
ambitious(problematic, trying)
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APASmart Define. (2015). testing thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/testing/thesaurus/synonyms
ChicagoSmart Define. 2015. "testing thesaurus" https://smartdefine.org/testing/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, testing thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/testing/thesaurus/synonyms>.
MLASmart Define. "testing thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/testing/thesaurus/synonyms>