| No. | Item | Definition |
|---|---|---|
| 1. | arrest | stop or check progress |
| 2. | balk | check or hinder progress |
| 3. | bar | prevent or exclude |
| 4. | bind | restrict or obligate |
| 5. | block | stop passage or progress |
| 6. | bog down | cause to stall |
| 7. | bottleneck | create a blockage |
| 8. | box in | trap or restrict |
| 9. | brake | slow or stop |
| 10. | break up | disrupt or divide |
| 11. | check | slow or stop progress |
| 12. | circumscribe | limit strictly |
| 13. | clog | choke or obstruct |
| 14. | complicate | make harder to do |
| 15. | constrain | limit or restrict |
| 16. | counteract | work against effectively |
| 17. | cramp | restrict movement or action |
| 18. | cripple | seriously weaken or impede |
| 19. | curb | keep under control |
| 20. | curtail | reduce or limit |
| 21. | defer | put off until later |
| 22. | delay | cause to happen later |
| 23. | derail | throw off course |
| 24. | deter | discourage or prevent |
| 25. | disable | make unable to function |
| 26. | disrupt | interrupt normal progress |
| 27. | disturb | interfere with normal activity |
| 28. | drag on | proceed too slowly |
| 29. | encumber | burden and impede |
| 30. | exclude | keep out or prevent |
| 31. | fence off | block with a barrier |
| 32. | fetter | restrain or restrict |
| 33. | foil | prevent from succeeding |
| 34. | forbid | not allow |
| 35. | forestall | prevent by acting first |
| 36. | foul up | disrupt or hinder |
| 37. | freeze | stop or halt temporarily |
| 38. | frustrate | prevent success or progress |
| 39. | gum up | clog or hinder |
| 40. | hamper | make progress difficult |
| 41. | hamstring | severely restrict effectiveness |
| 42. | handicap | put at a disadvantage |
| 43. | head off | prevent from happening |
| 44. | hem in | restrict movement or freedom |
| 45. | hold back | keep from advancing |
| 46. | hold in check | keep under control |
| 47. | hold up | delay or obstruct |
| 48. | immobilize | prevent movement or action |
| 49. | impair | damage or reduce ability |
| 50. | impede | slow or block progress |
| 51. | inconvenience | cause difficulty or delay |
| 52. | inhibit | hold back or restrain |
| 53. | interfere with | get in the way of |
| 54. | interrupt | break continuity or progress |
| 55. | jam | block tightly |
| 56. | keep back | hold from advancing |
| 57. | keep down | suppress or restrain |
| 58. | keep from | prevent from doing |
| 59. | limit | reduce freedom or extent |
| 60. | mess up | spoil or hinder |
| 61. | muffle | deaden or suppress |
| 62. | mute | reduce strength or effect |
| 63. | narrow | limit range or scope |
| 64. | obstruct | block movement or progress |
| 65. | oppose | act against or resist |
| 66. | paralyze | make unable to act |
| 67. | plug | block an opening |
| 68. | postpone | delay until later |
| 69. | preclude | make impossible |
| 70. | prevent | stop from happening |
| 71. | prohibit | formally prevent |
| 72. | protract | make longer or delay |
| 73. | put the brakes on | slow or restrain |
| 74. | resist | withstand or oppose |
| 75. | restrain | hold back from action |
| 76. | restrict | put limits on |
| 77. | retard | slow down progress |
| 78. | rule out | exclude as impossible |
| 79. | sap | drain strength from |
| 80. | set back | delay or reverse progress |
| 81. | shackle | bind or severely restrict |
| 82. | sidetrack | divert and delay |
| 83. | slacken | make slower or less active |
| 84. | slow | reduce speed or progress |
| 85. | stall | cause to stop progressing |
| 86. | stay | stop or delay |
| 87. | stop | bring to an end |
| 88. | stymie | block or frustrate progress |
| 89. | throw a wrench in | disrupt a plan |
| 90. | thwart | frustrate or defeat |
| 91. | tie down | restrict freedom |
| 92. | tie the hands of | restrict freedom to act |
| 93. | tie up | occupy and delay |
| 94. | trammel | restrict or impede |
| 95. | trip up | cause to fail |
| 96. | undermine | weaken gradually |
| 97. | veto | reject or block officially |
| 98. | wall off | isolate by blocking |
| 99. | ward off | prevent or repel |
| 100. | weigh down | burden and impede |

