/ ˌmɪsədˈventʃə(r); NAmE / noun
1.
[ U ] ( BrE , law ) death caused by accident, rather than as a result of a crime :
a verdict of death by misadventure
2.
[ C , U ] ( formal ) bad luck or a small accident
SYN mishap
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WORD ORIGIN
Middle English (in sense 2): from Old French mesaventure , from mesavenir turn out badly.