166 entries under tough topic. ×
| strenuous(adjective, strong, intense, energetic) | |
| whole(adjective, health, strong, great, sound) | |
| zippy(adjective, strong, fit, energetic) | |
| adamantine(adjective, strong, hard, strength) | |
| built(adjective, strong, fit, healthy) | |
| chipper(adjective, strong, great, right) | |
| hale and hearty(expression, adjective, idiom, strong) | |
| inflexible(adjective, strong, hard, solid) | |
| live(adjective, strong, fit, healthy) | |
| normal(strong, fit, fresh, well) | |
| robustious(adjective, strong, fit, healthy) | |
| robustuous(adjective, strong, fit, healthy) | |
| secure(verb, adjective, strong, sound) | |
| all right(expression, strong, fit, fresh) | |
| austere(adjective, strong, hard, sturdy) | |
| dense(adjective, person, body, strong, hard) | |
| determined(adjective, strong, hard, solid) | |
| effective(adjective, strong, hard, sharp) | |
| efficient(adjective, strong, intense, energetic) | |
| enterprising(adjective, strong, intense, energetic) |
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| APA | Smart Define. (2016). robust thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/robust/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "robust thesaurus" https://smartdefine.org/robust/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, robust thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/robust/thesaurus/synonyms>. |
| MLA | Smart Define. "robust thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/robust/thesaurus/synonyms> |