misadventure
mis- + adventure
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noun an unfortunate incident; a mishap:不運な出来事、災難
｟文｠ ; countable.icon 不運な出来事; 偶発事故; uncountable.icon 災難, 不運(misfortune)
by misadventure: 運悪く
ORIGIN
Middle English (in misadventure (sense 2 of the noun) ): from Old French mesaventure, from mesavenir ‘turn out badly’.