misadventure
/ˌmɪsədˈventʃə(r)/noun
1
- （亦作death by misadventure）[mass noun] Law death caused by a person accidentally while performing a legal act without negligence or intent to harm【律】意外致死。
2
- an unfortunate incident; a mishap不幸事故; 不幸遭遇; 灾难：
the petty misdemeanours and misadventures of childhood.
孩提时代的小过错和小灾难。
词源
Middle English (in sense 2)： from Old French mesaventure, from mesavenir 'turn out badly'.