- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
58 entries under severe topic. ×
| easier said than done(expression, tough, painful, problematic) | |
| galling(tough, harsh, heavy, painful) | |
| grim(tough, problematic, weighty, trying) | |
| hard-won(tough, painful, problematic, trying) | |
| immense(tough, painful, problematic, trying) | |
| merciless(adjective, tough, rough, difficult) | |
| murder(adjective, hard, great, tough) | |
| perplexing(adjective, hard, fancy, difficult) | |
| problem(tough, painful, problematic, trying) | |
| prohibitive(tough, painful, problematic, trying) | |
| puzzling(adjective, hard, fancy, difficult) | |
| rigid(adjective, hard, tough, rough) | |
| strict(adjective, hard, tough, rough) | |
| testing(adjective, tough, difficult, violent) | |
| unyielding(adjective, hard, tough, grim) | |
| upstream(tough, painful, problematic, trying) | |
| austere(adjective, difficult, harsh, heavy) | |
| unpermissive(adjective, hard, rough, difficult) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |