142 entries under firm topic. ×
| compact(adjective, set, hard, solid) | |
| concentrated(adjective, set, strong, hard) | |
| cussed(adjective, hard, severe, sharp) | |
| disciplinary(adjective, strong, hard, severe) | |
| hard-core(adjective, strong, hard, severe) | |
| incompliant(adjective, difficult, informal, awkward) | |
| indurated(adjective, hard, careless, indifferent) | |
| insubordinate(unreasonable, grim, inflexible, obstinate) | |
| iron-fisted(adjective, severe, harsh, rigid) | |
| locked in(hard, sharp, determined, fixed) | |
| meaning business(expression, adjective, strong, severe) | |
| ornery(adjective, energetic, violent, wild) | |
| picky(adjective, severe, harsh, grim) | |
| punctilious(adjective, severe, harsh, careful) | |
| recalcitrant(difficult, awkward, unreasonable, grim) | |
| scrupulous(adjective, complete, severe, harsh) | |
| secure(adjective, calm, strong, sound) | |
| self-willed(difficult, awkward, unreasonable, grim) | |
| single-minded(unreasonable, grim, rigid, reserved) | |
| unmanageable(adjective, rough, difficult, awkward) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |