Synonyms|643Antonyms|183|Broader|10Narrower|12Related|1.3k

58 entries under severe topic. ×

9
rigorous(adjective, hard, tough, rough)
9
wearisome(adjective, dull, tough, difficult)
8
stiff(adjective, hard, tough, rough)
7
harrowing(adjective, hard, difficult, tender)
5
Herculean(adjective, tough, difficult, awkward)
5
irritating(adjective, dull, tough, boring)
4
bothersome(adjective, hard, tough, difficult)
4
challenging(adjective, hard, great, tough)
4
titanic(tough, painful, problematic, trying)
3
gargantuan(tough, painful, problematic, trying)
3
no picnic(expression, adjective, tough, rough)
3
not easy(expression, idiom, tough, difficulty)
3
tiresome(adjective, hard, tough, difficult)
2
difficile(adjective, tough, rough, difficult)
2
hairy(adjective, hard, rough, difficult)
2
mean(adjective, hard, rough, difficult)
2
stern(adjective, hard, rough, difficult)
1
backbreaker(hard, tough, difficult, painful)
1
crucial(adjective, tough, deep, painful)
1
dangerous(adjective, tough, deep, grim)
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HarvardSmart Define 2016, arduous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>.
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