Attachment Style
One of 4 patterns, secure, anxious-preoccupied, dismissive-avoidant, or fearful-avoidant, describing how comfortable someone is with closeness and trust in relationships.
Attachment style comes from Bartholomew and Horowitz's 1991 four-category model, which extended Bowlby and Ainsworth's attachment theory from childhood to adult romantic relationships. Each style reflects a different mix of how positively someone views themselves and how positively they view others in close relationships.
It isn't a fixed label: attachment style can shift over time, between relationships, and with self-reflection or therapy, which is why it's better understood as a current pattern than a permanent identity.