61 entries under problematic topic. ×

1
no picnic(expression, tough, severe, painful)
1
not easy(expression, tough, severe, painful)
1
onerous(tough, severe, painful, trying)
1
operose(tough, severe, painful, trying)
1
painful(adjective, tough, severe, trying)
1
problem(tough, severe, painful, trying)
1
prohibitive(tough, severe, painful, trying)
1
rigid(tough, severe, painful, trying)
1
stiff(tough, severe, painful, trying)
1
strenuous(tough, severe, painful, trying)
1
toilsome(tough, severe, painful, trying)
1
trying(tough, severe, painful)
1
unyielding(tough, severe, painful, trying)
1
uphill(tough, severe, painful, trying)
1
upstream(tough, severe, painful, trying)
1
wearisome(tough, severe, painful, trying)
0
argumentative(tough, trying)
0
bearish(tough, trying)
0
boorish(tough, trying)
0
fastidious(tough, trying)
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APASmart Define. (2016). immense thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/immense/thesaurus/synonyms
ChicagoSmart Define. 2016. "immense thesaurus" https://smartdefine.org/immense/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, immense thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/immense/thesaurus/synonyms>.
MLASmart Define. "immense thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/immense/thesaurus/synonyms>