The short answer
Your Enneagram type is a single number: the core pattern that best describes your main fears, desires and motivations. A tritype is a three-number combination: your core type plus the type you lean on most in each of the other two centers of the Enneagram.
The core type doesn’t change or get replaced when you add a tritype. The tritype simply adds two supporting types to the picture. That can help explain why two people with the same core type behave so differently.
What a tritype is
The three centers
The nine Enneagram types are grouped into three centers, sometimes called triads:
| Center | Types | Core emotional theme often associated with it |
|---|---|---|
| Gut (body / instinctive) | 8, 9, 1 | Anger and autonomy |
| Heart (feeling / image) | 2, 3, 4 | Shame and identity |
| Head (thinking) | 5, 6, 7 | Fear and security |
The tritype idea is that each person has a preferred type within each of these centers. So you have a gut type, a heart type and a head type, even though only one of them is your core type.
How tritypes are written
A tritype is written as three digits, with your core type first and the other two in order of how strongly you use them. For example:
- 9-2-6: core type 9 (gut), then 2 (heart), then 6 (head).
- 4-7-8: core type 4 (heart), then 7 (head), then 8 (gut).
The non-core types are often called fixes. In the first example, a person might say they have a “2 fix” and a “6 fix”. The order matters: a 2-6-9 is the same set of numbers as 9-2-6, but with a different core type and a different overall feel.
Every tritype contains exactly one type from each center. You can’t have, say, 2-3-6, because 2 and 3 are both heart types.
Enneagram type vs tritype
| Core Enneagram type | Tritype | |
|---|---|---|
| What it is | One of nine types | Three types, one from each center |
| Format | A single number, often with a wing (e.g. 4w5) | Three digits in order (e.g. 4-5-9) |
| What it describes | Your central motivation and defence pattern | The core pattern plus how you respond in the other two centers |
| Origin | Mid-20th-century Enneagram of personality (Ichazo, Naranjo and later teachers) | Developed by Katherine Chernick Fauvre as an addition to the nine-type model |
| Status in the field | Shared across most Enneagram schools | Popular, but not used by every school or teacher |
How many tritypes are there?
Because you pick one type from each of three groups of three, there are 3 × 3 × 3 = 27 possible combinations of numbers. Fauvre describes these 27 combinations as distinct archetypes.
Each set of three numbers can also be put in six different orders (for instance 1-2-5, 1-5-2, 2-1-5, 2-5-1, 5-1-2, 5-2-1). Counting order, that’s 27 × 6 = 162 ordered tritypes. In practice, people usually talk about the 27 combinations and treat order as a refinement.
Where the idea came from
Katherine Chernick Fauvre developed the tritype model from research and interviews she began in the 1990s, and “Tritype” is a registered trademark associated with her work. She argued that people don’t use only one type. They have a preferred type in each center and move between them as they try to solve problems.
A related idea, sometimes called the trifix, appears in Oscar Ichazo’s earlier teaching, where a person’s patterns across the three centers are also considered. Fauvre’s version is the one most people mean today when they say “tritype”.
Tritype vs wings vs instincts
These layers are easy to confuse, and they answer different questions:
- Wings are the types next to your core type on the circle. A 4 can have a 3 wing or a 5 wing.
- Tritype fixes come from each center. They’re not limited to neighbours.
- Instincts (self-preservation, social, sexual) describe where your attention and energy flow. Ranked, they form your instinctual stacking; combined with your core type, they give your subtype, one of the 27 Enneagram subtypes.
One consequence is often overlooked. Some wings sit in the same center as the core type, and those can never appear in your tritype. A 4w3 has a heart-center wing (3), but a 4’s tritype already uses 4 as its heart type, so the 3 can’t be a fix. A 4w5’s wing is a head type, so a 5 can appear in the tritype, though it doesn’t have to.
An example: reading a 9-2-6
Picture someone whose core type is 9, then 2, then 6.
- As a 9, their default is to keep the peace, avoid conflict and go along with others.
- The 2 fix suggests that, in the heart center, they respond through warmth, helpfulness and attentiveness to others’ needs.
- The 6 fix suggests that, in the head center, they deal with uncertainty by seeking safety, reliable allies and reassurance.
Put together, this might describe someone who is easygoing, caring and loyal, and who smooths over tension partly by being helpful and partly by staying close to trusted people. A 9-5-1 person, by contrast, might come across as more detached, private and principled, despite sharing the same core type.
This is the main promise of tritype: it explains variation within one core type in terms of the other centers.
How to work out your tritype
- Start with your core type. Tritype is built on it. If you’re unsure of your core type, settle that first.
- Look at each of the other two centers separately. Ask which type in that center best matches how you react when that center is activated. In the head center, how do you deal with fear and uncertainty? Through knowledge and withdrawal (5), loyalty and preparation (6), or optimism and options (7)? In the heart center, how do you handle questions of worth and image? Through helping (2), achieving (3), or authenticity and depth (4)? In the gut center, how do you handle anger and boundaries? Through confronting (8), avoiding (9), or correcting (1)?
- Order the two fixes. Notice which one you fall back on first when your core strategy isn’t working.
- Read, then observe. Descriptions can be suggestive, so compare them against real past situations rather than how you’d like to respond.
- Use tests as a starting point only. Several online tritype tests exist, including one associated with Fauvre, but results should be checked against your own experience.
Close calls inside a center are common, especially between adjacent types. If you’re torn, focus on which type’s core fear you recognise in yourself, not which one you admire.
Criticisms and limits
Tritype is widely used in online Enneagram communities, but it’s one teacher’s model, and not every Enneagram school uses it. Some teachers question whether people really have a separate, stable “type” in each center, or whether tritype mostly reflects traits that wings, instincts and personal history already explain.
There’s also very little independent research on tritypes. Enneagram research in general is limited, and the tritype layer hasn’t been tested in the way established personality models have. Like other Enneagram layers, it’s best treated as a reflective tool, not a measurement.
Do you need a tritype at all?
Not to get value from the Enneagram. Many people find their core type and subtype enough. Tritype can help if you feel your core type explains part of you well but leaves out something important, or if you’re trying to understand why you and another person of the same type differ so much.
If you’re curious how tritype interacts with the instincts, see our short answer to does tritype have subtypes?