71 entries under adjective topic. ×

1
unsparing(tough, rough, difficult, harsh)
1
weighty
0
awkward(difficult, complex, demanding, complicated)
0
bad
0
harsh
0
merciless(tough, rough, difficult, heavy)
0
painstaking
0
scabrous(tough, rough, difficult, heavy)
0
slavish(tough, rough, difficult, heavy)
0
tedious
0
uphill battle(expression, tough, rough, difficult)
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APASmart Define. (2015). effortful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/effortful/thesaurus/synonyms
ChicagoSmart Define. 2015. "effortful thesaurus" https://smartdefine.org/effortful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, effortful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/effortful/thesaurus/synonyms>.
MLASmart Define. "effortful thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/effortful/thesaurus/synonyms>