Something happened. You remember it clearly. Then the other person insists, with total confidence, that it didn’t. Or that it happened completely differently than you remember. After enough rounds of this, you start doubting your own memory. Soon you doubt it more than you doubt them.

What does “gaslighting” mean?

Gaslighting is a pattern of manipulation. One person causes another to doubt their own memory, perception, or judgment, over a sustained period of time. It’s not a single lie or a single disagreement about facts. It’s a repeated pattern. Someone’s confidence in their own read of reality wears down, bit by bit. Eventually they start deferring to the other person’s version of events by default.

Where did the term come from?

The term comes from a 1938 stage play, later adapted into film. In it, a husband manipulates his wife into believing she’s losing her mind. Among other tactics, he dims the gas-powered lights in their home. Then he insists she’s imagining the change when she notices it. The term crossed over from describing that specific fictional plot into general use. Now it describes any real-world pattern that works the same way.

How does gaslighting actually work?

A few mechanics tend to repeat across real examples. First, it usually starts small. Someone disputes a minor detail, and the target lets it go rather than escalate a small disagreement. Second, the pattern repeats over time, targeting the person’s memory or perception specifically. It doesn’t debate the underlying issue itself. Third, the effect compounds. Each individual instance seems too minor to be worth a serious confrontation. But the cumulative effect is a person who has learned to distrust their own read of events by default.

Isolation often plays a role, too. Gaslighting tends to work best when the target has fewer other people confirming their version of events. An outside perspective, after all, can interrupt the pattern before it takes hold. That’s part of why the dynamic shows up so often in close relationships. There, one person’s account of events can become the primary — sometimes only — reference point the other person has.

The same basic pattern can appear beyond one-on-one relationships, too. Psychology and media commentary both use the term to describe organizations or groups that consistently deny a well-documented shared reality to the people experiencing it. They rely on repetition and authority, rather than evidence, to make individuals doubt what they witnessed firsthand.

A concrete example

One person recalls a conversation clearly, including specific details of what they said. The other person insists, calmly and consistently, that the conversation never happened that way. Or that it didn’t happen at all. Over repeated instances like this, the first person starts pre-emptively doubting their own memory. They begin deferring to the other person’s account, even when their own recollection feels solid.

What it’s not

Gaslighting isn’t the same as an honest disagreement, or a normal difference in how two people remember an event. Genuine misremembering happens to everyone. Pointing it out isn’t gaslighting on its own. The distinguishing feature is pattern and intent. Gaslighting describes a sustained, repeated effort to make someone doubt their own perception. It’s not an isolated moment of two people recalling something differently. A single tense argument about who said what isn’t evidence of the pattern on its own. It takes repetition, over time, targeting the same person’s confidence in their own memory specifically.

Where you’ll encounter it

The term shows up frequently in discussions of relationships, workplace dynamics, and psychology. Increasingly, it also appears in political commentary describing organizations or public figures who repeatedly deny well-documented events. Its wide adoption has also led to looser, more casual use of the word for ordinary disagreements. That’s worth keeping in mind when you hear it used.

Related terms

• Echo Chamber (L12)
• Sealioning (L13)
• Concern Trolling (L14)