'insecurely-attached' originates from the combination of 'insecurely' and 'attached', where 'insecurely' means 'in a manner lacking confidence or assurance' and 'attached' means 'joined or connected'.

'insecurely-attached' evolved from the psychological term 'insecure attachment', which was first introduced in the context of attachment theory.

Initially, it referred to a lack of security in physical attachment, but over time it evolved into its current psychological meaning of 'anxious or fearful attachment in relationships'.