Gaslighting is a form of manipulation where someone makes you question your own memory, perception or sanity. It is not a one-off disagreement about what happened. It is a pattern, and over time it leaves you second-guessing yourself and trusting their account of reality more than your own.
The word gets thrown around online for any argument at all, but the real thing is serious and can do lasting damage to someone’s confidence.
This page covers the definition, the signs and how it differs from related terms. For a fuller guide on dealing with it in a relationship, read our post on what gaslighting looks like in a relationship.
Where the term comes from
The term comes from the 1938 stage play Gas Light by Patrick Hamilton and the 1944 film Gaslight based on it. In the story, a husband slowly convinces his wife she is losing her mind. One of his tricks is dimming the gas lights in the house and then insisting she is imagining the change.
Therapists picked up the word to describe this kind of manipulation, and it moved into everyday language over the last decade or so.
What gaslighting looks like
Gaslighting tends to build slowly. Early on it can look like a harmless misunderstanding. The giveaway is the repetition and the direction: it always ends with you doubting yourself.
- Flat denial of things you clearly remember them saying or doing (“That never happened”).
- Telling you that you are too sensitive, dramatic or “crazy” whenever you raise a concern.
- Rewriting the story of an argument so you end up apologising for something they did.
- Questioning your memory in general (“You always get things wrong”).
- Telling you friends or family agree you are unreasonable, to make you feel isolated.
- Switching to kindness right after, so you doubt whether anything bad happened at all.
An example
You see a message on your partner’s phone from someone they said they had stopped talking to. You bring it up calmly.
You said you weren’t speaking to Sam anymore?
I never said that. You’re making things up again.
You told me last week, in the kitchen.
This is exactly what I mean. You twist everything. Maybe you need to talk to someone about your memory.
The issue (the message) has vanished. Now the conversation is about whether you can be trusted to remember things. That shift is the core move.
Why people do it
Some people gaslight deliberately to gain control or to cover up behaviour like cheating. Others do it more defensively: they cannot handle being wrong, so they rewrite events rather than face criticism. Either way, the effect on you is similar.
The motive does not change what to do about it. You do not need to prove they mean it before you are allowed to protect yourself.
Gaslighting vs related terms
Gaslighting is not the same as lying. Everyone lies occasionally. Gaslighting is lying specifically aimed at making you distrust your own mind, repeated over time.
It often shows up alongside love bombing, where intense affection early on makes it harder to believe the same person would later manipulate you. It can also overlap with negging, which uses small put-downs to chip away at your confidence. Both are classic red flags worth taking seriously.
What to do about it
- Write things down. A private note of what was said and when gives you something solid to check against.
- Talk to someone you trust outside the relationship. A friend’s outside view is often the quickest reality check.
- State what you remember once, without getting pulled into a debate about your memory.
- Notice the pattern rather than each individual incident. One argument is not gaslighting. A steady drip of “you’re imagining it” is.
- If you feel unsafe or worn down, it is OK to get support from a counsellor or a domestic abuse helpline.
A couple of things you can say:
I remember it differently and I’m confident in what I remember. I’m not going to argue about whether my memory works.
I’m not willing to keep having conversations where I end up doubting myself. Something needs to change.
Our full guide to gaslighting in a relationship goes deeper on how to respond and when to leave. If you are early in dating someone, our list of red flags in early dating you should never ignore is also worth a read.
FAQs
What is an example of gaslighting?
A partner says something hurtful, and when you bring it up later they insist they never said it and that you are “making things up again”. Over time, repeated denials like this leave you unsure what is real.
Is gaslighting always intentional?
Not always. Some people do it on purpose to control a partner; others do it out of defensiveness because they cannot admit fault. The impact on you can be just as damaging either way.
How do I know if I’m being gaslit or just wrong?
Everyone misremembers occasionally. The difference is pattern and outcome. If you regularly come away from conversations apologising, confused and doubting yourself, and the other person is never the one who got it wrong, that is a warning sign.
Can gaslighting happen early in dating?
Yes. It can start small, such as denying a plan they made or claiming you misread a message. Spotting it early is easier than untangling it months later.