| nonuniformity |
| obstruction(noun, check, delay, stay, wait) |
| overthrow(termination, suspension, closure, disbanding) |
| parenthesis |
| period(break, close, end, halt, delay) |
| plug(noun, break, end, block, bar) |
| prevention |
| problem(noun, check, delay, stay, wait) |
| procrastination(noun, check, delay, stay, wait) |
| prorogation(noun, check, delay, stay, wait) |
| putting off(noun, expression, check, delay, stay) |
| renunciation |
| resignation(noun, abandonment) |
| respite(noun, break, halt, delay, ending) |
| retardation(noun, check, delay, stay, wait) |
| retardment(noun, check, delay, stay, wait) |
| roadblock(noun, break, end, block, bar) |
| ruin(overthrow, termination, suspension, closure, disbanding) |
| setback(noun, check, delay, stay, wait) |
| showstopper(noun, check, delay, stay, wait) |