54 entries under problematical topic. ×

1
hairy(adjective, tough, rough, difficult, heavy)
1
heavy(adjective, strong, hard, tough, severe)
1
involved(adjective, tough, rough, difficult, heavy)
1
irksome(adjective, tough, rough, difficult, heavy)
1
knotty(adjective, tough, rough, difficult, heavy)
1
mean(adjective, severe, rough, difficult, harsh)
1
murder(adjective, tough, rough, difficult, heavy)
1
onerous(adjective, tough, rough, difficult, harsh)
1
scabrous(adjective, tough, rough, difficult, heavy)
1
serious(adjective, close, strong, hard, tough)
1
slavish(adjective, tough, rough, difficult, heavy)
1
sticky(adjective, tough, rough, difficult, heavy)
1
terrible(adjective, tough, rough, difficult, heavy)
1
tiring(adjective, tough, rough, difficult, heavy)
1
toilful(adjective, tough, rough, difficult, heavy)
1
toilsome(adjective, tough, rough, difficult, harsh)
1
uphill battle(expression, adjective, tough, rough, difficult)
1
wearing(adjective, tough, rough, difficult, heavy)
1
wearying(adjective, tough, rough, difficult, heavy)
0
awkward(adjective, difficult, demanding, grueling)
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APASmart Define. (2016). unsparing thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unsparing/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsparing thesaurus" https://smartdefine.org/unsparing/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, unsparing thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unsparing/thesaurus/synonyms>.
MLASmart Define. "unsparing thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/unsparing/thesaurus/synonyms>