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.

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Common forms

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.

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