13 entries under tough topic. ×

30
hard(adjective, severe, rough, difficult)
28
arduous(adjective, hard, severe, rough)
28
difficult(adjective, hard, rough, harsh)
27
trying(verb, adjective, hard, severe)
26
severe(adjective, hard, difficult, harsh)
19
demanding(adjective, hard, severe, rough)
13
exacting(adjective, hard, severe, rough)
9
troublesome(adjective, hard, severe, difficult)
5
fatiguing(adjective, hard, severe, difficult)
4
wearing(adjective, hard, difficult, heavy)
3
formidable(adjective, hard, severe, rough)
1
challenging(adjective, hard, difficult, complex)
1
testing(adjective, severe, difficult, violent)
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APASmart Define. (2015). taxing thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/taxing/thesaurus/synonyms
ChicagoSmart Define. 2015. "taxing thesaurus" https://smartdefine.org/taxing/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, taxing thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/taxing/thesaurus/synonyms>.
MLASmart Define. "taxing thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/taxing/thesaurus/synonyms>