Gaslighting: Meaning, Signs and How to Respond

Gaslighting is a form of psychological manipulation in which one person repeatedly makes another doubt their own memory, perception or sanity. Typical examples include insisting that something clearly said was never said, telling someone they are "too sensitive" or "imagining things", and rewriting the history of events. Over time the targeted person comes to rely on the gaslighter's version of reality rather than their own.

The term comes from Patrick Hamilton's 1938 play Gas Light and its film adaptations, most famously the 1944 Hollywood film Gaslight. It is now widely used in psychology, law and everyday language; Merriam-Webster named it its word of the year in 2022. This page explains gaslighting in depth. For the broader set of tactics it usually travels with, such as love bombing and DARVO, see gaslighting and manipulation tactics.

What Is Gaslighting?

Gaslighting goes beyond lying or arguing. A liar wants you to believe a particular falsehood; a gaslighter, as philosopher Kate Abramson put it, aims to undermine your standing as someone able to judge for yourself. The behaviors typically include persistent denial of events despite evidence, insisting the other person's perception is wrong, claiming they misremember or imagined things, and suggesting they are oversensitive, irrational or unstable.

Sociologist Paige Sweet (2019) argued that gaslighting is not just an individual psychological trick but draws on social stereotypes, for instance that women are "hysterical" or "overemotional", which make the target's doubts more believable to themselves and to others. Gaslighting is also often one part of coercive control, a pattern of domination in intimate relationships described by Evan Stark and now recognized in law in several countries.

Origin of the term

In Hamilton's play, set in Victorian London, Jack Manningham repeatedly tells his wife Bella that she is forgetful and unwell. When he secretly searches the upstairs flat at night, the gas lamps in the house dim; he insists she is imagining it. His goal is to convince her she is going insane. The play was filmed in Britain in 1940 and in Hollywood in 1944, starring Ingrid Bergman and Charles Boyer. Clinicians began using "gaslighting" for this kind of manipulation from the 1960s, and therapist Robin Stern's 2007 book The Gaslight Effect helped bring the term into wide use.

Common Gaslighting Phrases

Any of these phrases can be said innocently, and context matters. They become gaslighting when used repeatedly to override someone's clear experience:

Gaslighting Tactics

Domestic abuse organizations commonly describe several recurring gaslighting techniques, drawing on Patricia Evans's work on verbal abuse:

Denial

Flatly denying that something happened, even when there is evidence. Example: after shouting, saying "I never raised my voice; you're being dramatic."

Contradiction

Saying one thing, then insisting something different was said. Example: arranging dinner for 6 and later insisting "I told you 7; you never listen."

Trivializing

Making the other person's feelings or needs seem unimportant: "Why are you making such a big deal out of nothing?"

Countering

Questioning the other person's memory of events they recall accurately: "Are you sure? You know your memory isn't great."

Diverting

Changing the subject or questioning the source of the other person's thoughts: "Where did you get that idea? Have you been listening to your sister again?"

Forgetting

Pretending to forget agreements or conversations: "I never agreed to that. You must have dreamed it."

Blocking and withholding

Refusing to engage, or pretending not to understand: "I'm not discussing this again; you're just trying to confuse me."

Projection

Accusing the other person of the manipulation they are experiencing: "You're the one gaslighting me by bringing this up."

Psychological Effects

Research on gaslighting specifically is still young, and much of what is known comes from qualitative interviews with survivors and from the broader literature on emotional abuse and coercive control. The effects most consistently described include:

Self-doubt

The central effect is erosion of trust in one's own perceptions, memory and judgment. Survivors in Sweet's interviews often described feeling "crazy" and checking their recollections against others'.

Anxiety and hypervigilance

Not knowing what will be denied next can leave people anxious and constantly monitoring the other person's mood.

Low mood

Persistent invalidation and feeling trapped are associated with depressive symptoms and hopelessness.

Loss of identity

When one's experiences are repeatedly overridden, people describe losing touch with their preferences, opinions and sense of who they are.

Isolation

Gaslighting often goes with isolation from friends and family who might confirm the target's view; targets may also withdraw because the situation feels too confusing to explain.

Dependence

As self-trust falls, the person may defer to the gaslighter's account of events, which deepens the imbalance of power.

Trauma-related symptoms

Prolonged emotional abuse can contribute to trauma symptoms such as hyperarousal, intrusive memories and avoidance. Whether these meet criteria for a condition such as PTSD is something only a qualified professional can assess.

Why People Gaslight

Power and control

Controlling another person's sense of reality is a powerful way to control their choices. In coercive relationships, gaslighting supports wider domination.

Avoiding accountability

Denying reality can be a way to escape blame or consequences, closely related to the DARVO response (deny, attack, reverse victim and offender) described by Jennifer Freyd.

Personality traits

Gaslighting is associated with traits such as narcissism and Machiavellianism, part of the dark triad. Traits are not diagnoses, and most people with narcissistic traits or personality disorders are not abusive.

Insecurity

Some people find being wrong so threatening that they rewrite events to protect their self-image.

Learned behavior

People who grew up with gaslighting may repeat what was modelled to them, sometimes without recognizing it.

Where Gaslighting Occurs

Romantic relationships

Intimate relationships are the most studied context, where gaslighting is often part of emotional abuse or coercive control.

Parent-child relationships

Parents may deny children's feelings or experiences ("You're not upset", "That didn't happen"). Repeated invalidation in childhood can affect how people trust their own emotions later. See childhood trauma.

Workplaces

Managers or colleagues may deny instructions they gave, take credit for ideas and then deny it, or describe a reasonable complaint as oversensitivity. See workplace bullying and harassment.

Friendships and families

Friends and relatives can also distort shared history or dismiss concerns in ways that isolate one person.

Medical settings

"Medical gaslighting" is an informal term for having symptoms dismissed without proper investigation. Research on diagnostic delays shows this disproportionately affects women and some minority groups. It is usually not deliberate manipulation, but the effect on self-trust can be similar.

Political and institutional settings

The term is also used loosely for public denial of well-documented events. That usage stretches the original interpersonal meaning but reflects the same idea of undermining people's confidence in what they have seen.

Signs of Gaslighting

Robin Stern and others describe experiences that people being gaslighted often report. These are not a diagnostic checklist, and some are common during any stressful period, but a persistent cluster within one relationship is worth paying attention to:

• Frequently second-guessing yourself or asking "Am I too sensitive?"
• Apologizing often, even when unsure what you did wrong
• Making excuses for the other person's behavior to friends and family
• Feeling confused or "crazy" after conversations with this person
• Finding simple decisions difficult
• Withholding information from others to avoid having to explain
• Knowing something is wrong but being unable to say what
• Starting to lie or rehearse conversations to avoid being contradicted

Gaslighting vs. Normal Disagreement

People remember things differently all the time; memory is reconstructive, as research by Elizabeth Loftus and others shows. Disagreeing about what happened is not gaslighting in itself. The difference lies in the pattern and in how each person treats the other's experience.

How to Respond to Gaslighting

1. Name the pattern. Recognizing gaslighting for what it is reduces self-blame.
2. Take your perceptions seriously. Your memories and feelings deserve consideration. Persistent unease is a signal worth examining.
3. Keep a record. A private journal, saved messages and dated notes give you an anchor when your memory is questioned. Store them securely.
4. Check with others. Trusted friends, family or a therapist can offer an outside view and reduce isolation.
5. State your view once, then stop. For example: "I remember it differently, and I'm not going to argue about it." Lengthy debates rarely help with someone committed to denial.
6. Use "I" statements. "I felt hurt when that was said" describes your experience rather than inviting a debate about facts.
7. Set boundaries. Decide what you will do if the pattern continues, such as ending the conversation. See how to set boundaries.
8. Limit contact where possible. Distance often brings clarity.
9. Seek professional support. A therapist can help rebuild self-trust and think through options.
10. Consider the relationship as a whole. Persistent gaslighting is a feature of unhealthy and often abusive relationships.

Recovery from Gaslighting

Rebuilding self-trust

Recovery often starts small: making everyday decisions independently, noticing gut reactions, and writing down what happens and how you felt. Journaling and self-compassion can both help counter the habit of self-doubt.

Processing the experience

It is common to feel grief for the relationship, anger at the other person and at oneself, and shame at having been misled. Understanding that manipulation works on intelligent, caring people, and that responsibility lies with the person who manipulates, helps reduce shame.

Reconnecting with reality and others

Time with people who validate your experience, returning to activities and interests you set aside, and grounding or mindfulness practices can all help restore a sense of steadiness.

Learning red flags

Useful early signals include frequent denial of things you clearly remember, defensiveness whenever concerns are raised, an inability to admit being wrong, and feeling consistently confused or diminished around a person.

When Gaslighting Is Unintentional

Not all invalidation is deliberate. People genuinely misremember, can be defensive when criticized, or may have learned dismissive communication in their own families. Some writers argue the term is now overused for any disagreement, which risks diluting it.

A practical distinction is how someone responds when you express hurt. People who are not gaslighting can usually acknowledge your experience, even if they recall events differently, and try to change. Persistent denial, mockery and redirecting attention to your "sensitivity" point to a more serious pattern. Even unintentional invalidation causes harm, and in healthy relationships people try to understand rather than insist the other is wrong.

Supporting Someone Being Gaslighted

If someone you care about may be experiencing gaslighting, the most helpful thing is usually to listen and believe them: "That sounds really confusing and painful." Share specific observations gently rather than lecturing. Avoid ultimatums or harsh criticism of their partner, which can push them to defend the relationship, and respect their autonomy and timing. Stay in contact, since isolation is part of how gaslighting works, and offer information about professional and specialist services. If you witness incidents, a written note with dates may later be useful to them.

The Path Forward

Gaslighting is a serious form of emotional abuse because it targets the very tool people use to recognize abuse: their own judgment. The confusion and self-doubt it causes are understandable responses to manipulation, not character flaws. Recovery usually involves distance, outside validation, often professional support, and steady work to rebuild self-trust. For related reading, see toxic relationships and manipulation and dark psychology.