367 entries under hard topic. ×
| comfortless(adjective, severe, sharp, nasty) | |
| compressed(adjective, set, firm, solid) | |
| condensed(adjective, solid, rigid, inflexible) | |
| crude(adjective, strong, rude, sturdy) | |
| frigid(adjective, mean, cool, unpleasant) | |
| fussy(adjective, difficult, harsh, awkward) | |
| indurate(adjective, mean, firm, harsh) | |
| inhumane(adjective, harsh, cruel, grim) | |
| insensate(noun, adjective, severe, careless) | |
| jelled(solid, rigid, inflexible) | |
| perverse(adjective, mean, firm, difficult) | |
| pigheaded(adjective, mean, firm, difficult) | |
| rubbery(adjective, strong, flexible, sinewy) | |
| rude(adjective, severe, sharp, nasty) | |
| seasoned(adjective, strong, sound, fit) | |
| sharp(adjective, severe, smart, nasty) | |
| solidified(adjective, solid, rigid, inflexible) | |
| steeled(noun, adjective, strong, unfeeling) | |
| stiff-necked(adjective, mean, strong, firm) | |
| unpitying(adjective, mean, cool, informal) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |