Glossary

Plain-English definitions for terms thrown around in family court.

If you've spent any time on this kind of case, you've heard half these words used as if everyone already knew them. Most people don't. These are short, accurate, jargon-free definitions — written for the parent, not the professional.

High-conflict patterns

BPD Borderline Personality Disorder

A personality pattern characterized by emotional volatility, fear of abandonment, intense and unstable relationships, and difficulty regulating reactions. In family court, it can show up as rapidly cycling between hostility and reconciliation, accusations during transitions, and difficulty maintaining stable agreements.

Important caveat: only a licensed clinician can diagnose. Most useful framing for a parent is to recognize the pattern — without claiming a diagnosis you're not qualified to make.

NPD Narcissistic Personality Disorder

A personality pattern characterized by a need for admiration, low empathy, grandiosity, and sensitivity to criticism. In family court, it tends to show up as inability to share credit for parenting decisions, weaponizing the children for image management, and reframing every conflict as the other parent's fault.

Same caveat as BPD: parents are not in a position to diagnose. Recognize the pattern, document the behavior, do not put the diagnosis in writing.

ASPD Antisocial Personality Disorder

A pattern of disregard for the rights of others, low remorse, and willingness to deceive or manipulate. In family court, this can show up as bald lies under oath, financial concealment, and complete absence of guilt about behavior that visibly harms the children.

This is the rarest of the three patterns and the most dangerous to engage with directly. Documentation and professional involvement (attorney, GAL, custody evaluator) matter most here.

High-conflict personality

An umbrella term used by family-law professionals to describe a pattern of behavior — not a clinical diagnosis — that includes blaming others, all-or-nothing thinking, intense emotional reactions, and inability to take responsibility for one's role in conflict. Bill Eddy, who coined the term in this context, estimates that high-conflict personalities drive a disproportionate share of family-court litigation.

Parental alienation

The pattern of one parent undermining the children's relationship with the other parent, through criticism, gatekeeping, or deliberate distortion. Family courts take alienation seriously when it is documented, and judges read accusations of it carefully — which is why the way you write about your kids in messages and logs matters enormously, even if you would never alienate.

Reply frameworks

BIFF Brief, Informative, Friendly, Firm

The four-rule framework family-law professionals teach for replying to hostile messages. Keep it short. Stick to facts. Use a civil tone. End the topic. Coined by Bill Eddy of the High Conflict Institute.

See: The BIFF reply in the Playbook.

Gray rock

The technique of giving nothing emotional to react to. Replies become flat, factual, brief, and contain no emotional material the other person can hook into. Useful for chronic low-stakes provocation; risky during active custody cases. Originated in survivor and recovery communities, not in clinical literature — which is part of why it's controversial.

See: Gray rock in the Playbook.

Medium chill

A softer version of gray rock — polite but disengaged. You answer questions, you remain civil, but you don't volunteer information, follow emotional bids, or perform warmth. Often the right register for ongoing co-parenting after the decree.

Parallel parenting

A parenting arrangement designed to minimize contact between the parents. Each parent makes decisions independently during their parenting time. Communication happens only through written, structured channels (parenting apps, scheduled emails). Used when traditional cooperative co-parenting has failed and conflict is harmful to the children.

Manipulation tactics

DARVO Deny, Attack, Reverse Victim & Offender

A four-step pattern in which the offending party denies the behavior, attacks the person raising it, and then reframes themselves as the victim. Coined by psychologist Jennifer Freyd. Extremely common in high-conflict family-court communication.

Example: You text: "You were 90 minutes late to pickup again." Reply: "I was NOT late. You're always trying to make me look bad. I'm the one who actually shows up for these kids and you're constantly attacking me for no reason."

Gaslighting

Persistently making someone question their own memory, perception, or sanity by denying things they know happened or insisting on a contradictory version of events. The term comes from the 1944 film Gaslight. In family court, it shows up as flatly contradicting documented facts and acting baffled when you push back.

JADE Justify, Argue, Defend, Explain

The trap your hostile ex wants you to fall into — a long reply that justifies your position, argues against theirs, defends your character, and explains your reasoning. JADE replies are exactly what BIFF was invented to prevent. The acronym is a reminder: when you catch yourself doing any of these four, stop, delete, and rewrite shorter.

Triangulation

Bringing a third party into a two-person conflict to manipulate the dynamic. In family court, this shows up most often as bringing the children into adult disagreements, or invoking new partners, family members, or professionals to apply pressure. The fix: keep the conversation between the two parties responsible for it.

Flying monkeys

A folk term — from The Wizard of Oz — for the friends, family members, or new partners that a high-conflict ex deploys to harass or pressure you on their behalf. The communication isn't coming from your ex directly anymore, but the message is the same. Standard advice: don't engage with flying monkeys, don't accept their messages as substitute for direct communication, document if it escalates.

More than definitions

Compass spots these patterns in real time and tells you which framework to use.

See the plans →