| No. | Item | Definition |
|---|---|---|
| 1. | affirm | confirm or support strongly |
| 2. | amplify | increase force, amount, or effect |
| 3. | anchor | secure firmly in place |
| 4. | anneal | strengthen metal by heating and cooling |
| 5. | arm | equip for strength or defense |
| 6. | augment | make greater or stronger |
| 7. | back | support or reinforce |
| 8. | beef up | make stronger or more substantial |
| 9. | bind | tie or hold firmly together |
| 10. | bolster | support and make stronger |
| 11. | boost | increase strength, power, or effectiveness |
| 12. | brace | support or make steady |
| 13. | build up | gradually make stronger |
| 14. | buttress | support and strengthen firmly |
| 15. | cement | make firm, fixed, or lasting |
| 16. | combine | join to make stronger together |
| 17. | compact | make dense, firm, or solid |
| 18. | compress | press into a firmer form |
| 19. | concentrate | make stronger by gathering together |
| 20. | condition | train to become stronger or fitter |
| 21. | confirm | make more certain or established |
| 22. | consolidate | make stronger by combining or securing |
| 23. | corroborate | support with confirming evidence |
| 24. | crank up | increase intensity or power |
| 25. | deepen | make more intense or established |
| 26. | densify | make denser or more compact |
| 27. | develop | grow or make stronger over time |
| 28. | empower | give power, authority, or confidence |
| 29. | enable | make able or more capable |
| 30. | energize | give energy or strength |
| 31. | enforce | make stronger through authority |
| 32. | enhance | improve or increase strength |
| 33. | enrich | make better, fuller, or stronger |
| 34. | entrench | establish firmly and securely |
| 35. | equip | provide what is needed for strength |
| 36. | escalate | increase in force or intensity |
| 37. | expand | increase size, scope, or power |
| 38. | firm up | make stronger, firmer, or clearer |
| 39. | fortify | make stronger against attack or difficulty |
| 40. | fuse | join firmly together |
| 41. | galvanize | spur into stronger action |
| 42. | gear up | prepare for stronger action |
| 43. | harden | make tougher or more resistant |
| 44. | heal | restore health or soundness |
| 45. | heighten | increase strength, force, or degree |
| 46. | hone | sharpen or improve a skill |
| 47. | improve | make better or stronger |
| 48. | increase | make greater in strength or amount |
| 49. | integrate | combine into a stronger whole |
| 50. | intensify | make stronger or more extreme |
| 51. | invigorate | give strength, energy, or vitality |
| 52. | jack up | increase sharply or strongly |
| 53. | knit | join closely and firmly |
| 54. | link | connect to support or reinforce |
| 55. | magnify | make greater in effect or importance |
| 56. | maximize | increase to the greatest degree |
| 57. | mend | repair and make sound again |
| 58. | merge | combine into one stronger whole |
| 59. | mobilize | organize resources for stronger action |
| 60. | multiply | increase greatly in number or effect |
| 61. | nerve | give courage or resolve |
| 62. | optimize | make as effective as possible |
| 63. | power up | increase power or effectiveness |
| 64. | prop up | support and prevent weakening |
| 65. | pump up | increase energy, strength, or excitement |
| 66. | raise | increase level, strength, or amount |
| 67. | rebuild | build again or make strong again |
| 68. | refine | improve by careful adjustment |
| 69. | refresh | restore energy, strength, or vitality |
| 70. | rehabilitate | restore strength, ability, or status |
| 71. | reinforce | make stronger or more secure |
| 72. | reinvigorate | restore strength, energy, or vitality |
| 73. | renew | make fresh, strong, or effective again |
| 74. | repair | fix and restore strength |
| 75. | restore | bring back strength or condition |
| 76. | revitalize | give new strength or energy |
| 77. | secure | make safe, firm, or certain |
| 78. | sharpen | make keener or more effective |
| 79. | shore up | support something weak or failing |
| 80. | solidify | make firmer, stronger, or more certain |
| 81. | stabilize | make steady, firm, or secure |
| 82. | steady | make stable or firm |
| 83. | stiffen | make firmer or less flexible |
| 84. | stimulate | encourage activity, growth, or strength |
| 85. | streamline | make more efficient or effective |
| 86. | substantiate | support with proof or evidence |
| 87. | support | hold up or make stronger |
| 88. | sustain | keep strong, active, or continuing |
| 89. | temper | make tougher through controlled treatment |
| 90. | thicken | make denser, stronger, or thicker |
| 91. | tighten | make stricter, firmer, or stronger |
| 92. | toughen | make stronger and more resilient |
| 93. | train | develop strength or skill through practice |
| 94. | turn up | increase force, volume, or intensity |
| 95. | underpin | support as a strong foundation |
| 96. | unite | join together for strength |
| 97. | upgrade | improve to a stronger standard |
| 98. | uphold | support or maintain firmly |
| 99. | validate | confirm and support as sound |
| 100. | vitalize | give life, energy, or strength |