You've done it. Everyone has. You're mid-sentence, your brain is half a second behind your mouth, and out it comes: "um." Or "uh." Or the reigning champion of filler words, "you know."
You probably didn't notice. Your audience did.
Why Filler Words Matter More Than You Think
Filler words don't add meaning. They fill space where silence should be. And that distinction matters, because silence is one of the most powerful tools a speaker has. Every "um" is a missed pause. Every "you know" is a moment where you could have let your last point land.
The real damage isn't that filler words are annoying, though they can be. It's that they make you sound uncertain. A speaker who pauses looks thoughtful. A speaker who says "um" looks like they've lost their place. The difference is entirely perception, but perception is what your audience walks away with.
You Probably Don't Know How Often You Do It
Most people have no idea how many filler words they use until they hear themselves. Record one of your presentations and watch it back. Count the "ums." Count the "you knows." Count the "sos" at the beginning of every other sentence. It's uncomfortable, and it's the fastest way to start fixing it.
You'll also notice patterns. Maybe you fill when you're transitioning between ideas. Maybe it happens when you're reaching for a specific word. Maybe it's worst in the first thirty seconds before you settle in. Knowing your pattern is half the solution.
Three Ways to Cut Them
Get an Ah Counter. At Gilbert Toastmasters, every meeting has someone whose entire job is to listen for filler words and click a counter every time one slips out. It sounds brutal. It works. The clicker builds awareness faster than any self-help book. After a few meetings of hearing that click, you start catching yourself before the word comes out.
Watch yourself on video. Not just once. Regularly. You'll hear things you never noticed in the moment. You'll also see improvement over time, which is motivating.
Speak louder. This one sounds strange, but try it. When you project your voice, you breathe deeper and speak more deliberately. Nobody shouts "um." Volume forces intention, and intention is the opposite of filling.
The Goal Isn't Zero
You're never going to eliminate every filler word. That's not the point. The point is awareness. Once you hear them, you start replacing them with silence. And silence, delivered with confidence, makes you sound like someone worth listening to.
The occasional "um" won't ruin a good speech. But replacing a dozen of them with pauses will make a good speech noticeably better.