| No. | Item | Definition |
|---|---|---|
| 1. | adverse conditions | unfavorable circumstances causing difficulty |
| 2. | adversities | hardships creating serious difficulty |
| 3. | backlogs | accumulated work causing delay |
| 4. | barricades | temporary barriers blocking passage |
| 5. | barriers | things that block progress |
| 6. | blind alleys | unproductive lines of effort |
| 7. | blocks | things that stop movement |
| 8. | bottlenecks | points causing slow progress |
| 9. | brick walls | situations stopping all progress |
| 10. | bumps in the road | minor problems along the way |
| 11. | challenges | demanding things to deal with |
| 12. | checks | things that halt progress |
| 13. | complications | problems making something harder |
| 14. | conditions | terms affecting what is possible |
| 15. | congestion | overcrowding that slows movement |
| 16. | constraints | limits restricting action |
| 17. | counterforces | forces acting against progress |
| 18. | curbs | things that restrain action |
| 19. | dead ends | situations with no progress |
| 20. | defects | imperfections causing problems |
| 21. | deficiencies | lacks that hinder success |
| 22. | delays | things causing lateness |
| 23. | demands | requirements causing difficulty |
| 24. | difficulties | things hard to deal with |
| 25. | disruptions | events that disturb progress |
| 26. | encumbrances | burdens that hinder action |
| 27. | entanglements | complicated situations causing difficulty |
| 28. | faults | defects causing trouble |
| 29. | fences | barriers separating or blocking |
| 30. | financial barriers | money-related things blocking action |
| 31. | flaws | weak points causing difficulty |
| 32. | formal barriers | official things blocking progress |
| 33. | formalities | required procedures causing delay |
| 34. | friction | conflict that impedes progress |
| 35. | glitches | small faults causing problems |
| 36. | gridlock | complete lack of movement |
| 37. | halts | stops in movement or progress |
| 38. | hazards | sources of danger or difficulty |
| 39. | headwinds | forces working against progress |
| 40. | hindrances | things that make progress harder |
| 41. | hold-ups | delays that stop progress |
| 42. | hurdles | difficulties to overcome |
| 43. | impasses | deadlocked situations with no progress |
| 44. | impediments | things that hinder movement |
| 45. | inhibitions | inner restraints on action |
| 46. | interferences | things that disrupt progress |
| 47. | interruptions | breaks stopping ongoing progress |
| 48. | issues | problems needing attention |
| 49. | jams | tight situations blocking movement |
| 50. | knots | complex problems hard to solve |
| 51. | legal barriers | law-based things blocking action |
| 52. | liabilities | disadvantages creating difficulty |
| 53. | limitations | restrictions on what is possible |
| 54. | logjams | serious blockages causing delay |
| 55. | malfunctions | failures in how something works |
| 56. | mental blocks | thought barriers preventing progress |
| 57. | nonstarters | things unable to begin successfully |
| 58. | objections | expressions of opposition or doubt |
| 59. | obstructions | things that block the way |
| 60. | opposing forces | forces resisting movement or change |
| 61. | opposition | active resistance or disapproval |
| 62. | pitfalls | hidden dangers or difficulties |
| 63. | price barriers | costs preventing access |
| 64. | problems | matters causing trouble or difficulty |
| 65. | provisos | conditions attached to agreements |
| 66. | red tape | excessive rules causing delay |
| 67. | regulations | official rules limiting action |
| 68. | requirements | conditions that must be met |
| 69. | resistance | opposition that slows progress |
| 70. | restraints | things holding back action |
| 71. | restrictions | rules limiting action |
| 72. | roadblocks | things stopping progress forward |
| 73. | rules | requirements limiting what happens |
| 74. | setbacks | delays caused by problems |
| 75. | slowdowns | reductions in speed or progress |
| 76. | snags | unexpected problems or difficulties |
| 77. | stalemates | situations with no progress |
| 78. | standstills | complete stops in activity |
| 79. | sticking points | parts causing disagreement or delay |
| 80. | stoppages | interruptions that halt progress |
| 81. | stumbling blocks | things causing failure or delay |
| 82. | tangles | confused difficult situations |
| 83. | technicalities | small rules causing difficulty |
| 84. | tie-ups | blockages causing delay |
| 85. | traps | things causing trouble unexpectedly |
| 86. | trouble spots | areas causing repeated problems |
| 87. | troubles | problems causing distress or difficulty |
| 88. | uphill battle | a difficult struggle to overcome |
| 89. | vetoes | formal blocks on action |
| 90. | vicissitudes | difficult changes and hardships |
| 91. | vises | tight constraints or pressures |
| 92. | walls | things stopping further progress |
| 93. | wear and tear | damage that creates difficulties |
| 94. | weather | conditions affecting movement or plans |
| 95. | weights | burdens that slow progress |
| 96. | wind resistance | force that slows movement |
| 97. | wrenches | disruptions that hinder plans |
| 98. | yokes | burdensome restraints or controls |
| 99. | zone restrictions | area-based limits on activity |
| 100. | zoning limits | land-use rules restricting action |