the.com/enmeshment

means A state where people's identities, emotions, and boundaries are so tangled together that neither person can tell where their own feelings stop and the other's begin.

from Built from 'mesh,' the netting or woven fabric word that traces back to Germanic roots meaning a net or loop structure — think fishing nets and chain mail. 'Enmesh' emerged as a verb meaning to catch or entangle in such netting, used first quite literally, then figuratively for anyone caught in a tangle of circumstances. 'Enmeshment' is the noun form psychology borrowed in the 20th century, particularly from family-systems therapy, to describe relationships so interwoven that the 'net' of connection leaves no room for separate selves.