191 entries under tough topic. ×
| impervious(adjective, hard, solid, detached) | |
| insubordinate(firm, persistent, obstinate, stubborn) | |
| perverse(adjective, mean, hard, firm) | |
| rebellious(adjective, firm, unreasonable, inflexible) | |
| rough(adjective, strong, hard, severe) | |
| solidified(adjective, set, hard, firm) | |
| titanic(severe, painful, problematic, trying) | |
| unflexible(adjective, hard, firm, solid) | |
| unmanageable(firm, persistent, obstinate, stubborn) | |
| unpermissive(adjective, hard, severe, rough) | |
| willful(firm, inflexible, obstinate, stubborn) | |
| ambitious(severe, painful, problematic, trying) | |
| arduous(adjective, hard, severe, rough) | |
| backbreaker(severe, painful, problematic, trying) | |
| balky(firm, unreasonable, inflexible, obstinate) | |
| bothersome(severe, painful, problematic, trying) | |
| bullheaded(adjective, strong, hard, severe) | |
| by the book(expression, adjective, idiom, strong, hard) | |
| challenging(severe, painful, thorough, demanding) | |
| congealed(adjective, set, hard, firm) |
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| APA | Smart Define. (2015). rigid thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, rigid thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>. |
| MLA | Smart Define. "rigid thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms> |