| No. | Item | Definition |
|---|---|---|
| 1. | absence | the lack of something present |
| 2. | ache | a strong painful longing |
| 3. | ambition | a strong desire to succeed |
| 4. | appetite | a desire or physical need |
| 5. | ask for | to request or require something |
| 6. | aspiration | a strong desire for achievement |
| 7. | bare necessity | a most basic essential |
| 8. | basic requirement | a fundamental necessity |
| 9. | be conditioned on | to depend on a requirement |
| 10. | be contingent on | to depend on as a condition |
| 11. | be required | to be necessary or demanded |
| 12. | call for | to require a particular thing |
| 13. | claim | to demand as needed or due |
| 14. | compulsion | an irresistible or forced necessity |
| 15. | condition | something required for something else |
| 16. | core requirement | a central necessity |
| 17. | craving | a powerful desire for something |
| 18. | dearth | a serious lack or scarcity |
| 19. | deficiency | a lack or insufficiency |
| 20. | deficit | an amount that is lacking |
| 21. | demand | to require urgently or firmly |
| 22. | desire | a strong want or wish |
| 23. | destitution | extreme lack of essentials |
| 24. | drive | a strong motivating need |
| 25. | emergency | an urgent situation requiring action |
| 26. | entail | to involve as a necessary result |
| 27. | entry requirement | condition needed for admission |
| 28. | essential | something absolutely necessary |
| 29. | exigency | an urgent need or demand |
| 30. | expect | to require as proper or likely |
| 31. | fancy | a passing desire or liking |
| 32. | formal requirement | an official required condition |
| 33. | gap | a missing requirement or lack |
| 34. | hankering | a strong informal desire |
| 35. | hardship | difficulty caused by serious lack |
| 36. | have to have | to require or strongly want |
| 37. | hinge on | to depend crucially on something |
| 38. | hunger | a strong need or desire |
| 39. | imperative | an urgent necessity or command |
| 40. | imply | to suggest or require by implication |
| 41. | impulse | a sudden urge or drive |
| 42. | inclination | a tendency or mild desire |
| 43. | insist on | to demand firmly as necessary |
| 44. | insufficiency | not enough of something needed |
| 45. | involve | to require as part of something |
| 46. | itch | a strong restless desire |
| 47. | job requirement | condition needed for a job |
| 48. | key requirement | an important necessity |
| 49. | lack | to be without something necessary |
| 50. | life necessity | something necessary for survival |
| 51. | logical necessity | something required by reasoning |
| 52. | longing | a strong persistent desire |
| 53. | look for | to seek or want something |
| 54. | lust | an intense desire or craving |
| 55. | maintenance requirement | maintenance that must be done |
| 56. | mandatory | required by authority or rule |
| 57. | minimum requirement | the least necessary condition |
| 58. | must have | something essential or highly necessary |
| 59. | necessary | required or essential |
| 60. | necessitate | to make something necessary |
| 61. | necessity | something needed or unavoidable |
| 62. | needed | required or wanted |
| 63. | needful | necessary or required |
| 64. | obligation | something one is required to do |
| 65. | obligatory | required by duty or rule |
| 66. | poverty | lack of sufficient resources |
| 67. | precondition | a condition required in advance |
| 68. | preference | a thing wanted more than others |
| 69. | prerequisite | something required beforehand |
| 70. | presuppose | to require as a prior assumption |
| 71. | privation | lack of basic necessities |
| 72. | qualification | a required skill or condition |
| 73. | rely on | to depend on something necessary |
| 74. | request | to ask for something needed |
| 75. | require | to have to have something |
| 76. | requirement | something that is necessary or demanded |
| 77. | requisite | something required for a purpose |
| 78. | rest on | to depend on as necessary |
| 79. | scarcity | a shortage of something available |
| 80. | seek | to try to obtain something |
| 81. | shortage | a lack of enough supply |
| 82. | shortfall | a failure to meet requirements |
| 83. | stipulation | a stated requirement or condition |
| 84. | straits | serious difficulty or need |
| 85. | take | to require a particular amount |
| 86. | thirst | a strong desire or physical need |
| 87. | time requirement | time necessary for completion |
| 88. | training requirement | training that must be completed |
| 89. | urge | a strong impulse or need |
| 90. | urgency | pressing importance or necessity |
| 91. | urgent necessity | a pressing requirement |
| 92. | urgent requirement | a pressing necessity |
| 93. | vacuum | an empty lack needing filling |
| 94. | vital requirement | a crucial necessity |
| 95. | void | an empty lack or absence |
| 96. | want | to lack or desire something |
| 97. | wanting | lacking or deficient in something |
| 98. | wish | a desire for something |
| 99. | yearning | a deep strong desire |
| 100. | yen | a strong desire or craving |