142 entries under grim topic. ×

21
stern(adjective, hard, easy, severe, rough)
20
adamant(adjective, mean, strong, hard, rough)
20
obdurate(adjective, mean, strong, hard, cool)
19
hardened(noun, adjective, characteristic, strong, hard)
18
strenuous(adjective, action, dull, strong, great)
18
unbending(adjective, mean, clear, strong, hard)
17
onerous(adjective, dull, hard, great, severe)
17
unfeeling(noun, adjective, calm, mean, hard)
17
unsympathetic(adjective, mean, hard, cool, severe)
14
exacting(adjective, dull, hard, easy, severe)
14
hard-boiled(noun, adjective, mean, strong, hard)
14
ruthless(adjective, strong, hard, severe, rough)
14
strict(adjective, strong, hard, easy, severe)
13
savage(adjective, hard, rough, harsh, violent)
12
insensitive(noun, adjective, mean, hard, cool)
12
heavy(noun, adjective, good, person, dull)
12
uphill(adjective, great, easy, severe, rough)
11
brutal(adjective, good, bad, hard, cool)
11
cold(adjective, good, mean, bad, hard)
11
fixed(adjective, mean, strong, hard, sound)
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APASmart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>