- bad luck, mischance, mishap - an unpredictable outcome that is unfortunate; "if I didn't have bad luck I wouldn't have any luck at all"
--1 is a kind of luck, fortune, chance, hazard
- mishap, misadventure, mischance - an instance of misfortune
--2 is a kind of misfortune, bad luck
--2 has particulars:accident; near miss; derailment; ground loop; puncture; slip, trip; collapse; crash