- Definitions|2
- Thesaurus|652
- Abbreviations|0
67 entries under tough topic. ×
| unpliable(difficult, awkward, obstinate, stubborn) | |
| unreasonable(firm, grim, inflexible, obstinate) | |
| unruly(difficult, awkward, obstinate, stubborn) | |
| untoward(firm, unreasonable, grim, inflexible) | |
| difficult(awkward, obstinate, stubborn, willful) | |
| levelheaded(adjective, hard, shrewd, stubborn) | |
| shrewd(adjective, hard, sharp, practical) |
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| APA | Smart Define. (2015). pertinacious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/pertinacious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "pertinacious thesaurus" https://smartdefine.org/pertinacious/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, pertinacious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/pertinacious/thesaurus/synonyms>. |
| MLA | Smart Define. "pertinacious thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/pertinacious/thesaurus/synonyms> |