67 entries under tough topic. ×

1
menacing(adjective, severe, unpleasant, important)
1
momentous(adjective, severe, heavy, important)
1
nagging(adjective, hard, difficult, painful)
1
perverse(adjective, severe, harsh, cruel)
1
pressing(adjective, hard, severe, difficult)
1
resentful(adjective, severe, harsh, cruel)
1
rigorous(adjective, hard, severe, harsh)
1
stern(adjective, severe, harsh, cruel)
1
strict(adjective, hard, severe, difficult)
1
stringent(adjective, hard, severe, difficult)
1
unjust(adjective, severe, harsh, cruel)
1
unrelenting(adjective, harsh, cruel, grim)
1
unsparing(adjective, severe, harsh, grim)
1
urgent(adjective, hard, severe, difficult)
0
callous(adjective, harsh, grim, painful)
0
cold(adjective, harsh, cruel, grim)
0
cold-blooded(adjective, harsh, cruel, grim)
0
cold fish(expression, adjective, harsh, cruel)
0
hard-boiled(adjective, harsh, cruel, grim)
0
hard as nails(expression, adjective, idiom, severe)
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APASmart Define. (2016). grievous thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/grievous/thesaurus/synonyms
ChicagoSmart Define. 2016. "grievous thesaurus" https://smartdefine.org/grievous/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, grievous thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/grievous/thesaurus/synonyms>.
MLASmart Define. "grievous thesaurus" 26 February 2016. Web. 30 September 2026. <https://smartdefine.org/grievous/thesaurus/synonyms>