codependency

In psychological contexts, this term carries a strong negative connotation, specifically referring to a dysfunctional relationship dynamic. It describes a cycle where one person's identity becomes tied to the act of rescuing or enabling another person's dysfunction, often leading to a loss of self-esteem and boundaries for the caregiver.

In a broader systemic or economic context, the term is more neutral and describes a symbiotic relationship. Here, it refers to a structural necessity where two entities are inextricably linked, meaning the failure of one inevitably leads to the collapse of the other.