- Definitions|0
- Thesaurus|72
- Abbreviations|0
6 entries under adjective topic. ×
| dogged(determined, persistent) | |
| hang tough(expression, tough, sharp, sensible) | |
| immovable(steady, fixed, obstinate, stubborn) | |
| intractable(sharp, difficult, practical, shrewd) | |
| hardboiled(firm, dogged, immovable, level-headed) | |
| level-headed(tough, sharp, sensible, sober) |
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| APA | Smart Define. (2011). tough nut thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/tough_nut/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "tough nut thesaurus" https://smartdefine.org/tough_nut/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2011, tough nut thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/tough_nut/thesaurus/synonyms>. |
| MLA | Smart Define. "tough nut thesaurus" 23 May 2011. Web. 27 September 2026. <https://smartdefine.org/tough_nut/thesaurus/synonyms> |