'bad luck' definitions:

An unfortunate state resulting from unfavorable outcomes [syn: misfortune, bad luck, tough luck, ill luck] [ant: good fortune, good luck, luckiness]

An unpredictable outcome that is unfortunate; "if I didn't have bad luck I wouldn't have any luck at all" [syn: bad luck, mischance, mishap]

Unnecessary and unforeseen trouble resulting from an unfortunate event [syn: misfortune, bad luck]