Glossary
Triangulation.
Triangulation is the systematic introduction of a third party into a two-person relationship to destabilize, control, compare, or punish. The term originates in mid-twentieth-century family-systems theory (Murray Bowen), where it described how unstable dyads relieve their tension by pulling in a third member. In narcissistic dynamics, the “relief” is one-sided — the narcissist relieves tension at the expense of everyone else in the triangle.
Audio readout.
Common forms
- The new partner. A real or implied alternative — admiring colleague, an ex who keeps reaching out, an ambiguous “friend” — held over the relationship for leverage.
- The favored child / scapegoat. Siblings positioned against each other through the narcissistic parent's preferences. See golden child and scapegoat.
- The child as confidant. A child used as emotional support against the other parent — parentification and emotional incest.
- Parental alienation. The systematic turning of children against the targeted parent. See parental alienation.
- Flying monkeys. Friends, family, mutuals recruited to deliver pressure or carry messages. See flying monkeys.
- Workplace triangulation. Coalitions, leaked information, deliberate comparisons designed to produce conflict among colleagues while positioning the narcissist as the stable adult.
Why it is so destabilizing
Triangulation works by making it impossible to address the original conflict on its merits. The survivor is no longer responding to one person's concern; they are responding to what feels like a chorus. To clarify, they would need to talk to the third party — but if they do, the narcissist controls how that conversation has been framed in advance. The instinct to clear up the misunderstanding is itself a trap.
The deeper damage is to the social ecosystem. After enough triangulation, the people who might have been independent witnesses — friends, family, colleagues, children — have received the narcissist's framing first and the survivor's never.
What helps
Inside the relationship: refuse to argue against absent third parties. “If your sister has a concern, she can raise it with me.” Do not chase third parties to clear up what was said; that is a losing game. Do not relay messages.
If children are being used as triangulation tools, the priority is to maintain a stable, non-reactive, non-disparaging presence rather than to compete with the narcissist's framing through counter-framing.
The fuller treatment is at abuse/triangulation.