misadventure
nounAn instance of misfortune; a mishap.
nounAn unfortunate adventure or hap; a mischance; ill luck.
nounMischance; misfortune; ill luck; unlucky accident; ill adventure.
nounhomicide which occurs when a man, doing a lawful act, without any intention of injury, unfortunately kills another; — called also
An
an instance of misfortune