Définitions
1.Verbpast participle of go bad
2.AdjectiveOf foods and commodities, having become spoiled, rotten, or otherwise unusable due to age or storage conditions.
3.AdjectiveOf a person or entity, having ceased to be reputable and having instead become delinquent, criminal, or poorly behaved.
4.AdjectiveOf a region or area, having become unsafe.
5.AdjectiveOf a delinquent or criminal act, having unexpectedly become more violent than is typical for that act—having resulted in an attack on a victim leading to serious injury or death."a drug deal gone bad, a robbery gone bad"