- Definitions|1
- Thesaurus|567
- Abbreviations|0
13 entries under important topic. ×
| deep(adjective, tough, severe, difficult) | |
| far-reaching(adjective, tough, severe, deep) | |
| fateful(adjective, tough, severe, deep) | |
| formidable(adjective, tough, severe, deep) | |
| hard(adjective, tough, severe, deep) | |
| laborious(adjective, tough, severe, deep) | |
| meaningful(adjective, tough, severe, deep) | |
| operose(adjective, tough, severe, deep) | |
| smoking(adjective, tough, severe, deep) | |
| sobering(adjective, tough, severe, deep) | |
| tough(adjective, severe, difficult, deep) | |
| unamusing(adjective, tough, severe, deep) | |
| worrying(adjective, tough, severe, deep) |
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| APA | Smart Define. (2013). unhumorous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unhumorous/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "unhumorous thesaurus" https://smartdefine.org/unhumorous/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2013, unhumorous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unhumorous/thesaurus/synonyms>. |
| MLA | Smart Define. "unhumorous thesaurus" 28 June 2013. Web. 28 September 2026. <https://smartdefine.org/unhumorous/thesaurus/synonyms> |