| No. | Item | Definition |
|---|---|---|
| 1. | adversity | a difficult or unfavorable situation |
| 2. | annoyance | a minor but persistent hindrance |
| 3. | bar | something that prevents entry or action |
| 4. | barricade | a barrier blocking passage |
| 5. | barrier | something that blocks progress |
| 6. | block | something that stops progress |
| 7. | blockage | something that blocks a passage |
| 8. | bottleneck | a point that restricts flow |
| 9. | brake | something that slows progress |
| 10. | brick wall | a point where progress stops |
| 11. | burden | a load that makes progress harder |
| 12. | catch | a hidden drawback or condition |
| 13. | challenge | a demanding task or situation |
| 14. | check | something that stops or restrains |
| 15. | choke point | a narrow point that restricts flow |
| 16. | clog | something that blocks a passage |
| 17. | clogging | a blocking that prevents flow |
| 18. | complication | a factor that makes things harder |
| 19. | constraint | a limit that restricts action |
| 20. | curb | a restraint on action |
| 21. | dead end | a situation with no progress |
| 22. | deadlock | a standstill from opposing forces |
| 23. | delay | something that slows completion |
| 24. | deterrent | something that discourages action |
| 25. | difficulty | something hard to deal with |
| 26. | disadvantage | a condition that reduces chances |
| 27. | disruption | an interruption that hinders progress |
| 28. | drag | something that slows things down |
| 29. | drawback | a disadvantage that hinders success |
| 30. | encumbrance | a burden that hinders action |
| 31. | entanglement | a complication that hinders progress |
| 32. | fault | a flaw that causes difficulty |
| 33. | flaw | a weakness that hinders success |
| 34. | formality | a required step causing delay |
| 35. | friction | resistance that slows progress |
| 36. | gauntlet | a series of challenges to face |
| 37. | glitch | a minor fault causing trouble |
| 38. | gridlock | a complete traffic-like standstill |
| 39. | halt | a stop that prevents progress |
| 40. | handicap | a disadvantage that makes success harder |
| 41. | hang-up | a psychological or practical block |
| 42. | hardship | a difficult condition to endure |
| 43. | hazard | a danger that blocks safe progress |
| 44. | hindrance | something that slows or prevents action |
| 45. | hold-up | a delay that stops progress |
| 46. | hurdle | a difficulty to overcome |
| 47. | impasse | a deadlock with no solution |
| 48. | impediment | something that obstructs movement or progress |
| 49. | inconvenience | a trouble that makes things harder |
| 50. | inhibition | something that restrains action |
| 51. | interference | something that disrupts progress |
| 52. | interruption | a break that delays progress |
| 53. | jam | a situation where movement stops |
| 54. | knot | a complicated problem to untie |
| 55. | liability | a drawback that causes trouble |
| 56. | limitation | a factor that reduces ability |
| 57. | load | a weight that slows progress |
| 58. | logjam | a blockage causing a standstill |
| 59. | menace | a threatening obstacle to safety |
| 60. | minefield | a situation full of hidden dangers |
| 61. | mire | a difficult situation that traps |
| 62. | morass | a confusing, difficult situation |
| 63. | nuisance | an annoying hindrance |
| 64. | obstruction | something that gets in the way |
| 65. | opposition | people or forces working against |
| 66. | ordeal | a severe and trying experience |
| 67. | paperwork | administrative burden causing delays |
| 68. | peril | serious danger blocking safe action |
| 69. | pinch point | a tight spot limiting movement |
| 70. | pitfall | a hidden or likely difficulty |
| 71. | plug | something that stops an opening |
| 72. | problem | something that needs solving |
| 73. | prohibition | a rule that forbids action |
| 74. | proviso | a condition that restricts agreement |
| 75. | quagmire | a messy situation hard to escape |
| 76. | qualification | a limiting condition or exception |
| 77. | red tape | bureaucratic delay or obstruction |
| 78. | regulation | an official rule limiting action |
| 79. | requirement | a condition that must be met |
| 80. | restriction | a rule limiting what is possible |
| 81. | risk | a threat that complicates action |
| 82. | roadblock | something that stops forward movement |
| 83. | rough patch | a difficult period or stretch |
| 84. | rule | a regulation that restricts action |
| 85. | setback | a problem that delays progress |
| 86. | snag | an unexpected problem or difficulty |
| 87. | speed bump | a minor delay or difficulty |
| 88. | stalemate | a deadlock where neither side wins |
| 89. | standstill | a halt in progress |
| 90. | sticking point | the main point of difficulty |
| 91. | stop | something that prevents continuation |
| 92. | stoppage | a stopping of movement or work |
| 93. | stumbling block | a problem that stops progress |
| 94. | tangle | a confusing complication |
| 95. | test | a difficult challenge to face |
| 96. | threat | something likely to cause harm |
| 97. | trap | a situation hard to escape |
| 98. | trial | a test that is hard to endure |
| 99. | uphill battle | A situation that is hard to overcome. |
| 100. | veto | a refusal that blocks approval |
