The Language of Emotions: A Plain-English Glossary of Mental Health Terms

Affect

The outward, observable expression of an emotion — such as facial expressions, tone of voice, or body language. Clinicians often describe affect as 'flat,' 'blunted,' or 'broad' to indicate how much emotional expression a person shows.

Cognitive Distortion

A habitual, inaccurate thought pattern that skews how a person perceives reality. Common examples include catastrophizing (assuming the worst will happen) and black-and-white thinking (seeing situations as all good or all bad). Recognizing distortions is a core part of cognitive behavioral therapy (CBT).

Dysregulation

Difficulty managing the intensity or duration of emotional responses. A person experiencing emotional dysregulation may feel overwhelmed by feelings quickly, struggle to return to a calm baseline, or react in ways that feel out of proportion to a situation.

Rumination

Repetitive, passive focus on distressing thoughts or feelings — particularly around past events or perceived failures. Unlike productive problem-solving, rumination tends to deepen negative mood rather than resolve the underlying issue.

Resilience

The capacity to adapt and recover from adversity, stress, or significant challenges. Resilience is not about avoiding difficulty but about how flexibly a person responds to it; it is a skill that can be developed over time.

Mindfulness

The practice of paying deliberate, non-judgmental attention to the present moment — including thoughts, sensations, and feelings as they arise. Mindfulness is rooted in contemplative traditions and is also supported by a substantial body of psychological research.

Psychoeducation

The process of providing structured information about a mental health condition, its causes, and its management to a person experiencing it (and sometimes to their family). It is a common component of many evidence-based therapies.

Dissociation

A mental experience of detachment from one's thoughts, feelings, surroundings, or sense of identity. Mild dissociation (like daydreaming) is common; more significant dissociation can be a symptom of several mental health conditions and warrants professional evaluation.

Window of Tolerance

A concept from trauma therapy describing the optimal zone of nervous system arousal in which a person can function effectively — neither too overwhelmed (hyperaroused) nor too shut down (hypoaroused). Therapists use this framework to guide pacing in trauma work.

Somatic

Relating to the body. In mental health, 'somatic symptoms' refers to physical sensations — such as tension, nausea, or fatigue — that are connected to emotional or psychological states rather than an underlying physical illness.

Attachment Style

A pattern of relating to others in close relationships, rooted in early experiences with caregivers. Psychologists typically describe four broad styles — secure, anxious, avoidant, and disorganized — each of which can influence adult relationships and emotional responses.

Psychological Safety

The degree to which a person feels safe to express themselves — including vulnerability, mistakes, or disagreement — without fear of negative consequences. Originally studied in workplace teams, the concept is now widely applied in therapy, relationships, and group settings.