mishap
1. [ noun ] an unpredictable outcome that is unfortunate
Synonyms: bad_luck mischance
Examples:

"if I didn't have bad luck I wouldn't have any luck at all"

Related terms: luck
2. [ noun ] an instance of misfortune
Synonyms: mischance misadventure
Related terms: misfortune accident collapse crash puncture slip ground_loop near_miss derailment