| No. | Item | Definition |
|---|---|---|
| 1. | add to | increase or strengthen |
| 2. | advance | move to a stronger state |
| 3. | amplify | increase strength or impact |
| 4. | anchor | secure firmly in place |
| 5. | arm | equip for defense or resistance |
| 6. | armor | provide protective covering |
| 7. | augment | make greater or stronger |
| 8. | barricade | block and secure against entry |
| 9. | base | place on a foundation |
| 10. | batten | fasten or reinforce with strips |
| 11. | blockade | seal off for protection |
| 12. | bolster | support or strengthen |
| 13. | boost | increase strength or effectiveness |
| 14. | brace | make firmer or steadier |
| 15. | build up | increase strength gradually |
| 16. | bulk up | make larger and stronger |
| 17. | buttress | support or strengthen firmly |
| 18. | cement | make more firmly established |
| 19. | compact | press into a firmer mass |
| 20. | compress | press together more tightly |
| 21. | condition | prepare and strengthen for use |
| 22. | confirm | make more certain or firm |
| 23. | consolidate | make stronger by uniting |
| 24. | corroborate | support with confirming evidence |
| 25. | deepen | make stronger or more intense |
| 26. | defend | protect from attack or harm |
| 27. | develop | grow stronger over time |
| 28. | drill | train to strengthen readiness |
| 29. | elevate | raise to a stronger level |
| 30. | encase | enclose in a protective covering |
| 31. | enforce | strengthen the effect of |
| 32. | enhance | increase strength or quality |
| 33. | enrich | improve by adding strength |
| 34. | entrench | establish more firmly |
| 35. | expand | make larger or stronger |
| 36. | extend | increase scope or strength |
| 37. | fasten | close or secure firmly |
| 38. | feed | supply what strengthens growth |
| 39. | fence | enclose for protection |
| 40. | firm up | make firmer or more secure |
| 41. | fix | make firm or stable |
| 42. | found | establish on a basis |
| 43. | frame | support with a structure |
| 44. | fuel | provide what strengthens activity |
| 45. | garrison | station troops to strengthen defense |
| 46. | ground | give a firm basis to |
| 47. | guard | protect against danger |
| 48. | harden | make stronger or tougher |
| 49. | heighten | increase strength or intensity |
| 50. | improve | make better or stronger |
| 51. | insulate | protect by isolating |
| 52. | intensify | make stronger or more forceful |
| 53. | invigorate | give strength or energy to |
| 54. | jacket | cover with a protective layer |
| 55. | lift | raise or strengthen |
| 56. | line | cover inner surface protectively |
| 57. | lock down | secure tightly against access |
| 58. | nail down | secure firmly or settle |
| 59. | nourish | provide what strengthens |
| 60. | outfit | equip fully for use |
| 61. | pad | protect with cushioning |
| 62. | pin down | secure or fix firmly |
| 63. | plate | cover with a protective layer |
| 64. | prepare | make ready and stronger |
| 65. | proof | make resistant to something |
| 66. | prop up | support something from collapse |
| 67. | protect | keep safe from harm |
| 68. | provision | supply what strengthens readiness |
| 69. | raise | increase level or strength |
| 70. | ratify | formally confirm or strengthen |
| 71. | ready | make prepared and stronger |
| 72. | reaffirm | strengthen by stating again |
| 73. | reinforce | add strength or support to |
| 74. | renew | restore strength or vigor |
| 75. | restore | bring back strength or soundness |
| 76. | revitalize | make stronger and more active |
| 77. | root | establish firmly in place |
| 78. | safeguard | protect from risk or harm |
| 79. | secure | make safe or stable |
| 80. | shield | protect from harm or attack |
| 81. | shore up | support something weak or failing |
| 82. | stabilize | make more stable or secure |
| 83. | steel | make mentally stronger |
| 84. | stiffen | make more rigid or firm |
| 85. | strengthen | make stronger or more secure |
| 86. | support | hold up or strengthen |
| 87. | sustain | strengthen or keep going |
| 88. | temper | strengthen by toughening |
| 89. | tie down | secure firmly in place |
| 90. | tighten | make firmer or more secure |
| 91. | toughen | make tougher or more resilient |
| 92. | train | make stronger by practice |
| 93. | truss | support with a rigid framework |
| 94. | underpin | support from below or behind |
| 95. | upgrade | raise to a stronger level |
| 96. | uphold | support and maintain |
| 97. | validate | confirm as sound or strong |
| 98. | wall in | enclose with protective walls |
| 99. | waterproof | make resistant to water |
| 100. | weatherproof | protect against weather damage |