Enneagram

Enneagram Glossary Terms, Definitions & Concepts

Your comprehensive reference guide for understanding Enneagram terminology and key concepts.

Start typing to filter the glossary.

Showing matching .

About This Glossary

This is an evolving reference. We've started with foundational Enneagram vocabulary. More depth (examples, cross-links, advanced concepts) will be added gradually.

Last updated: Jan 7, 2026

Arrow (Integration / Growth)

The direction of movement on the Enneagram symbol that shows how a type adopts the healthier qualities of another type when relaxed and growing (e.g., Type 1 integrates to 7).

Arrow (Disintegration / Stress)

The direction of movement showing how a type tends to take on the less healthy qualities of another type under stress (e.g., Type 1 disintegrates to 4).

Centers of Intelligence

The three core processing centers - Gut (Instinct), Heart (Feeling), and Head (Thinking) - that shape how each type experiences the world.

Core Desire

The primary inner longing that motivates a type’s behaviour and choices. Each type has one central desire (e.g., Type 3 desires to feel valuable).

Core Fear

The fundamental fear a type is unconsciously trying to avoid or compensate for; it sits beneath surface anxieties (e.g., Type 6 fears being without support or guidance).

Core Motivation

Sometimes used as an umbrella term for the combined inner drive of core desire and core fear that propels type patterns.

Defense Mechanism

A habitual psychological strategy each type deploys to protect its ego structure (e.g., Type 1 uses reaction formation, Type 9 narcotisation).

Fixation

A repeating mental preoccupation or cognitive style that reinforces the ego structure of a type. Often paired with the Passion.

Passion (Vice)

The core emotional habit or distortion of each type (e.g., Anger for Type 1, Pride for Type 2, Gluttony for Type 7). Passions colour reactivity.

Virtue

The transformed emotional quality that emerges as a type relaxes its Passion and grows (e.g., Serenity for Type 1, Humility for Type 2).

Holy Idea

A higher-level perspective or spiritual truth that arises when the fixation loosens (e.g., Holy Perfection for Type 1). Considered advanced teaching.

Hornevian Groups (Stances)

Three social interaction styles: Assertive (3,7,8), Compliant/Dependent (1,2,6), and Withdrawn (4,5,9), describing how types move toward or away from others to get needs met.

Harmonic Groups

Problem-solving styles: Positive Outlook (2,7,9), Reactive (4,6,8), and Competency (1,3,5) - how types respond when things go wrong.

Object Relations Groups

Underlying relational templates: Attachment (3,6,9), Frustration (1,4,7), Rejection (2,5,8). These reflect how early unmet needs shaped relational strategies.

Instincts (Instinctual Drives)

Three primal survival drives - Self-Preservation, Social, and Sexual (One-to-One) - that influence how a type expresses itself. One is typically dominant, one repressed.

Instinctual Stack

The ordering of a person’s three instincts from most to least expressed (e.g., Social > Self-Preservation > Sexual).

Subtype (Instinctual Variant)

The combination of core type and dominant instinct (e.g., Social 6). Subtypes can significantly alter outward presentation.

Levels of Development

A continuum (popularised by Riso & Hudson) describing healthy, average, and unhealthy manifestations within each type.

Repressed Center

The intelligence center (Gut, Heart, or Head) a person underuses or delays, creating imbalance (e.g., many Type 3s under-access the Heart center authentically).

Wing

One of the two adjacent types on either side of a core type which flavours its expression (e.g., a 5w4 vs 5w6). Wings modify - not replace - the core type.

Dominant Wing

The adjacent type that most strongly influences the core type’s flavour. Some experience balanced wings; others lean clearly to one side.

Misidentification

Confusing one’s true type with another due to shared behaviours, overlapping instinct or subtype expression, or aspirational self-image.

Typing

The process of discovering one’s Enneagram type through assessment, reflection, behavioural patterns, and motivation inquiry.

Self-Observation

Practising non-judgmental awareness of one’s habitual reactions, core narratives, and embodied patterns - essential for genuine growth.

Ego Structure

The patterned identity a type clings to for safety and continuity. Personal work gently loosens identification without attacking the self.

Growth Work

Intentional practices that relax compulsive patterns and foster the Virtue, balance the centers, and expand freedom of response.

Shadow Material

Aspects of self a type denies or represses because they threaten its core identity strategy (e.g., Type 2 denying personal needs).

Narrative Pattern

The recurring inner storyline or explanatory frame that reinforces the type’s worldview (e.g., “I must hold it together” for Type 1).

Missing a term you expected? More entries coming soon. Let us know which you’d like added next.

Ready to discover your true self?

Take the free 54‑question assessment and unlock deeper insights into your personality, motivations, and relationships.