124 entries under strict topic. ×
| rigorous(adjective, strong, tough, severe, rough) | |
| cold-blooded(adjective, person, mean, cool, tough) | |
| ruthless(adjective, mean, tough, severe, evil) | |
| strenuous(adjective, dull, great, tough, severe) | |
| uncompromising(adjective, mean, severe, rough, difficult) | |
| unkind(adjective, person, mean, cool, tough) | |
| exacting(adjective, dull, tough, easy, severe) | |
| obstinate(adjective, mean, tough, rough, harsh) | |
| unbending(adjective, mean, strong, tough, severe) | |
| unrelenting(adjective, mean, strong, tough, severe) | |
| pitiless(adjective, mean, tough, severe, nasty) | |
| heavy(adjective, person, dull, body, strong) | |
| inexorable(adjective, mean, strong, tough, severe) | |
| unpleasant(adjective, mean, cool, tough, severe) | |
| relentless(adjective, mean, strong, tough, severe) | |
| steely(adjective, strong, tough, firm, solid) | |
| sharp(adjective, strong, tough, severe, harsh) | |
| tyrannical(adjective, tough, evil, nasty, harsh) | |
| unsparing(adjective, mean, strong, tough, severe) | |
| antagonistic(adjective, person, mean, harsh, cruel) |
For more, visit
Hard on
Power Thesaurus
| APA | Smart Define. (2016). hard thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |