Common Terms in Mental Health Conversations, Defined Plainly

Why This Glossary Exists

Mental health conversations — whether with a therapist, in a support group, or on a wellness podcast — are increasingly common. But the language used can feel like a second dialect: words like somatic, dysregulation, or cognitive distortion appear without explanation, leaving many people nodding along while quietly confused.

Knowing what these terms actually mean helps you engage more confidently with care providers, understand what you read, and recognize when a concept applies to your own experience. This glossary defines the terms plainly, without clinical gatekeeping.

For a broader look at sustaining emotional health day to day, see our practical mental wellness overview. And if you want to understand the difference between mental health and mental wellness — two terms often used interchangeably but meaning different things — our explainer on that distinction is a useful companion.

The Terms, Defined

The twelve terms below represent a core vocabulary you are likely to encounter in wellness content, therapy settings, or mental health advocacy spaces. They are organized to build on one another rather than alphabetically.

Several of these terms — particularly cognitive distortion and rumination — are central to evidence-based therapies like Cognitive Behavioral Therapy (CBT). If you are curious whether a specific therapy modality might be relevant to your situation, our guide to therapy, counseling, and psychiatry explains what different professionals actually do in practice.

Terms like somatic and nervous system regulation appear frequently in mindfulness and body-based wellness spaces. For a grounded look at mindfulness itself, see Mindfulness Without the Jargon, which cuts through the oversimplification common in popular media.

It is also worth noting that encountering these terms in wellness content does not mean every use is clinically precise. Words like trauma and dissociation carry specific meanings in clinical contexts that differ from casual usage — a distinction worth keeping in mind. Our article on persistent myths about mental illness covers how imprecise language can contribute to misunderstanding.

If you find glossaries like this useful for navigating complex systems, you may also find our fitness terms glossary helpful for the physical wellness side of the picture.