| hindrance(noun, difficulty, arrest, obstacle, obstruction) |
| hitch(noun, difficulty, obstacle, obstruction, impediment) |
| impedance(noun, difficulty, arrest, obstacle, obstruction) |
| impediment(noun, difficulty, obstacle, obstruction, hitch) |
| interference(noun, difficulty, obstacle, obstruction, impediment) |
| interruption(noun, difficulty, obstacle, obstruction, impediment) |
| intervention(noun, difficulty, obstacle, obstruction, impediment) |
| jam-up(noun, difficulty, arrest, obstacle, obstruction) |
| joker(noun, difficulty, obstacle, obstruction, impediment) |
| limitation(noun, difficulty, obstacle, obstruction, impediment) |
| lock(noun, difficulty, obstacle, obstruction, impediment) |
| millstone(noun, difficulty, obstacle, obstruction, impediment) |
| monkey wrench(noun, expression, difficulty, obstacle, obstruction) |
| obstacle(noun, difficulty, arrest, obstruction, impediment) |
| obstruction(noun, difficulty, obstacle, impediment, hitch) |
| restraint(noun, difficulty, obstacle, obstruction, impediment) |
| restriction(noun, difficulty, obstacle, obstruction, impediment) |
| snag(noun, difficulty, arrest, obstacle, obstruction) |
| stoppage(noun, difficulty, obstacle, obstruction, impediment) |
| stumbling block(noun, expression, difficulty, obstacle, obstruction) |