| No. | Item | Definition |
|---|---|---|
| 1. | able-bodied | physically strong and capable |
| 2. | abrasion-resistant | resistant to surface wear |
| 3. | adamant | firm and unyielding |
| 4. | battle-tested | proven under harsh conditions |
| 5. | big-boned | large and solidly built |
| 6. | bombproof | extremely secure and durable |
| 7. | braced | supported to make stronger |
| 8. | brawny | physically strong and muscular |
| 9. | break-resistant | hard to break |
| 10. | built to last | made for long use |
| 11. | bulletproof | able to stop bullets |
| 12. | burly | large and strongly built |
| 13. | buttressed | strengthened with support |
| 14. | cast-iron | extremely strong and durable |
| 15. | close-grained | dense and solid in texture |
| 16. | close-knit | tightly bound and strong |
| 17. | cold-resistant | able to withstand cold |
| 18. | compact | dense and solidly formed |
| 19. | corrosion-resistant | resists rust and corrosion |
| 20. | craftsmanlike | well made and solid |
| 21. | dense | closely packed and solid |
| 22. | durable | able to last well |
| 23. | enduring | lasting and strong |
| 24. | failsafe | unlikely to fail |
| 25. | fire-resistant | able to resist fire |
| 26. | firm | not easily bent or shaken |
| 27. | formidable | impressively strong or powerful |
| 28. | fortified | strengthened against damage |
| 29. | gritty | showing toughness and courage |
| 30. | hale | healthy and strong |
| 31. | hard as nails | extremely tough and durable |
| 32. | hard-wearing | lasting well under use |
| 33. | hardened | made hard and durable |
| 34. | hardy | able to withstand hardship |
| 35. | heat-resistant | able to withstand heat |
| 36. | heavy-duty | made for hard use |
| 37. | hefty | heavy and solid |
| 38. | husky | big, strong, and robust |
| 39. | immovable | unable to be moved |
| 40. | impact-resistant | able to withstand blows |
| 41. | indestructible | unable to be destroyed |
| 42. | inflexible | not easily bent |
| 43. | intact | whole and undamaged |
| 44. | iron | very strong and unyielding |
| 45. | ironclad | very strong and secure |
| 46. | lasting | continuing for a long time |
| 47. | leakproof | not allowing leaks |
| 48. | leathery | tough like leather |
| 49. | load-bearing | able to support weight |
| 50. | long-lasting | lasting a long time |
| 51. | mighty | very strong and powerful |
| 52. | mold-resistant | resists mold growth |
| 53. | muscular | physically strong and powerful |
| 54. | oak-strong | strong like oak wood |
| 55. | powerful | having great strength |
| 56. | rawboned | lean and strongly built |
| 57. | redoubtable | formidable and strong |
| 58. | reinforced | made stronger by support |
| 59. | resilient | able to recover and endure |
| 60. | rigid | stiff and firm |
| 61. | roadworthy | safe and solid for roads |
| 62. | robust | strong and healthy or solid |
| 63. | rock-solid | extremely firm and dependable |
| 64. | rugged | strongly built and rough |
| 65. | rustproof | not likely to rust |
| 66. | serviceable | usable and in solid condition |
| 67. | sinewy | lean but strongly built |
| 68. | solid | firm and dependable |
| 69. | sound | in good, solid condition |
| 70. | stable | firmly fixed and steady |
| 71. | stalwart | strong, loyal, and dependable |
| 72. | stocky | broad and solidly built |
| 73. | stout | strong and thickly built |
| 74. | strong | physically powerful and solid |
| 75. | substantial | large, solid, and strong |
| 76. | taut | pulled tight and firm |
| 77. | tear-resistant | hard to tear |
| 78. | tempered | strengthened by treatment |
| 79. | tenacious | holding firmly; persistent |
| 80. | thick | having solid breadth |
| 81. | thickset | stocky and strongly built |
| 82. | tight-knit | closely bound and strong |
| 83. | time-tested | proven over long use |
| 84. | tough | hard to damage or break |
| 85. | tried-and-true | proven reliable and durable |
| 86. | unbreakable | not able to be broken |
| 87. | underpinned | given firm support |
| 88. | unshakable | not easily disturbed |
| 89. | unyielding | not giving way easily |
| 90. | vigorous | strong, active, and energetic |
| 91. | wear-resistant | resistant to wearing down |
| 92. | well-built | strongly and solidly made |
| 93. | well-founded | securely based and sound |
| 94. | well-framed | having a strong frame |
| 95. | well-grounded | firmly established and sound |
| 96. | well-knit | firmly and strongly built |
| 97. | well-made | made strongly and carefully |
| 98. | well-seasoned | hardened and durable through use |
| 99. | wiry | thin but strong |
| 100. | workmanlike | solidly and competently made |