| stoppage(noun, block, difficulty, obstacle, obstruction) |
| stumbling block(noun, expression, block, difficulty, restraint) |
| trammel(noun, block, difficulty, obstacle, obstruction) |
| weed |
| adjustable spanner(expression, idiom) |
| adjustable wrench(expression, idiom) |
| barricade(noun, block, obstacle, impediment, barrier) |
| block(noun, difficulty, restraint, hindrance, problem) |
| blockade(noun, block, obstacle, impediment, barrier) |
| blockage(noun, block, obstacle, impediment, barrier) |
| blocking(obstacle, impediment, barrier) |
| booby trap(noun, expression, block, difficulty, restraint) |
| bridle(hindrance, impediment, discouragement) |
| bump(difficulty, hindrance, problem, impediment, discouragement) |
| burden(noun, obstacle, obstruction, impediment, barrier) |
| checkmate(noun, block, obstacle, impediment, barrier) |
| circumvention(noun, block, obstacle, impediment, barrier) |
| complication(difficulty, hindrance, problem) |
| constraint(hindrance, impediment, discouragement) |
| curb(hindrance, impediment, discouragement) |