| curveball(noun, slang, case, situation, circumstance) |
| unexpected event(expression, event, occurrence, happening, incident) |
| blip(noun, case, situation, circumstance, incident) |
| contingency(noun, case, situation, circumstance, incident) |
| eventuality(noun, case, situation, circumstance, incident) |
| force majeure(expression, case, situation, circumstance, incident) |
| hazard(noun, case, situation, circumstance, incident) |
| joker(noun, case, situation, circumstance, incident) |
| unanticipated factor(expression, case, situation, circumstance, incident) |
| unexpected turn(expression, case, situation, circumstance, incident) |
| unforeseeable circumstance(expression, case, situation, circumstance) |
| unforeseen circs(expression, case, situation, circumstance, incident) |
| unforeseen consequence(expression, case, situation, circumstance, incident) |
| unforseen cause(expression, case, situation, circumstance, incident) |
| force majeure circumstance(expression, event, case, possibility, occurrence) |
| unanticipated event(expression, event, occurrence, happening, incident) |
| unforeseen event(expression, event, occurrence, happening, incident) |
| unforseen event(expression, event, occurrence, happening, incident) |