Why Your Brain Forgets Words and What It Reveals About Your Mind
Elizabeth Thornhill is a trauma-informed mental health coach specializing in neuroscience and brain-based healing. Her work focuses on helping women understand how past experiences shape the brain and how to rewire thought patterns for lasting change.
Have you ever been in the middle of a sentence and watched a word completely vanish from your mind? You are not alone, and there is fascinating neuroscience behind why it happens. Here is what your brain is actually doing, and what it might reveal about you.
I have a confession. I am a Neuroscience Coach. I write about the brain for a living. When I sat down to write this article about tip of the tongue moments, those maddening seconds when a word is right there but refuses to come out, I could not, for the life of me, remember a single example of it happening to me. It is certainly not because it never does. My brain, in its infinite wisdom, decided to demonstrate the exact phenomenon I was trying to explain. So if you have ever stood in the middle of a sentence, mouth open, absolutely certain the word exists somewhere in your head, welcome. You are in very good company. Even the Neuroscience Coach does it.
What TOT actually is
You know the moment. The word you need has completely vanished, and saying "you know, the thing" on repeat somehow feels like it is going to help. It never does. Scientists call this a tip of the tongue moment, TOT for short, and it happens to many people, including, embarrassingly, those of us who study the brain professionally. Here is the reassuring part, the word has not gone anywhere. Your brain simply needs a moment to search its very full filing cabinet, and it will find what it is looking for eventually.
The brain's retrieval failure
Here is something most people do not realize, recalling a word and being able to say it out loud are actually two separate brain processes. Finding the memory is one thing, but converting it into spoken language involves a completely different part of the brain. It is that second step that fails during a TOT moment. Research has actually identified the specific region responsible, a small area called the left insula, and people with less activity there experience TOT moments more often. This tends to happen naturally as we age, but here is the part I love, studies show that people who exercise regularly have significantly less decline in this area and fewer TOT moments as a result.
Stress makes it worse
Now, I realize I may have just talked about aging and exercise in one breath and am now about to tell you that TOT moments can also be a sign of intelligence, and you are probably wondering which it is. The honest answer is that it can be both, depending on the person and the situation. A 2026 study found that people with richer, more densely connected knowledge networks in their brains experience TOT moments more frequently, simply because their brain has more to sort through. So while age and fitness play a role, having a well stocked, highly connected brain is also a very legitimate trigger. Which means that the next time a word escapes you mid sentence, there is a reasonable chance your brain is just impressively busy.
A sign of intelligence?
Now, I realize I may have just talked about aging and exercise in one breath and am now about to tell you that TOT moments can also be a sign of intelligence, and you are probably wondering which it is. The honest answer is that it can be both, depending on the person and the situation. Some cognitive research suggests that people with richer, more densely connected knowledge networks in their brains may experience TOT moments more frequently, simply because their brain has more to sort through. So while age and fitness play a role, having a well stocked, highly connected brain may also be a very legitimate trigger. Which means that the next time a word escapes you in the middle of a sentence, there is a reasonable chance your brain is just impressively busy.
How to get words back
So what do you actually do when it happens? The single most effective thing, and I say this knowing full well how annoying it sounds, is to stop trying. When you force it, you create mental tension that blocks the very pathway you are trying to open. Relax, let the conversation move on, and your brain will quietly keep working in the background. The word will come when your brain is no longer under pressure to perform. For the longer term, regular exercise genuinely helps keep your left insula sharp, which may be the most unexpected fitness motivation you have ever come across. So the next time it happens at a dinner party, you have my full permission to blame your left insula, poke a little fun at yourself, and enjoy the laugh, because now you actually know why.
Let's stay connected
If you found this interesting and want to explore more about how your brain shapes your everyday life, I would love to connect. Visit me here or find me on Instagram, Facebook, and LinkedIn. If you enjoyed this article, you might also like my interview on understanding brain patterns to create lasting change.
Read more from Elizabeth Thornhill
Elizabeth Thornhill, Brain Health/Neuroscience Coach
Elizabeth Thornhill is a neuroscience-informed trauma coach specializing in brain-based healing and behavioral transformation. Her work focuses on helping women understand how past experiences shape brain function, driving patterns that often feel impossible to change. Through practical, science-backed tools, she equips her clients to rewire their thinking and create lasting, measurable change. She believes the past does not have to define the future and that meaningful change is always possible. Her mission is to help women break free from limiting patterns and step fully into the lives they are capable of building.
