The term "addict" has a number of different meanings and can be used in various contexts. Generally speaking, an addict is someone who is unable to stop using or engaging in something despite negative consequences or harm it may cause themself or others. This could refer to substances such as drugs or alcohol, behaviors like gambling or shopping, or even activities like sex or food. In a broader sense, the term can also be used to describe someone who is overly dependent on something or has an unhealthy obsession with it.