Why you say “um”, and why pausing fixes it

Most people believe they say “um” because they have lost the thread. In practice, most fillers happen at two predictable moments: when you start a sentence, and when you are deciding what the second half of it should be. Both are timing problems, not vocabulary problems.

That matters, because the usual advice — “just stop saying um” — asks you to monitor yourself in real time while also thinking about the content. Almost nobody can do that. The advice that works changes the timing instead.

What a filler is actually doing

Say this out loud: “So, um, the migration is, uh, mostly done.”

Now say it with a half-second of silence in the same places: “So — the migration is — mostly done.”

The second version is not slower in any meaningful way. It is roughly the same length. What changed is that the hesitation became visible as a pause rather than audible as a sound. Listeners read silence as composure. They read “um” as a request for permission to continue.

That is the whole trick. You are not removing the hesitation. You are changing what it sounds like.

The start of the sentence

The first filler usually arrives before the first real word, because you began speaking before you knew the sentence. The fix is mechanical: know the first four or five words exactly, and nothing else.

For a meeting update, that means deciding the opening clause before the meeting: “Three things on the migration.” For an interview answer: “The hardest bug I fixed was in billing.” You are not memorising the answer, only the runway.

Try it once. Say the opening clause, stop, then improvise. The filler disappears because there was nothing to hesitate about yet.

The middle of the sentence

The second filler arrives when a sentence runs longer than the thought that produced it. You started with a plan, the plan ran out, and the mouth kept going.

Two habits help:

• End the sentence. A short sentence that stops is better than a long one that fills. “The migration is mostly done. We are blocked on one vendor.” is easier to follow than the same content delivered as one clause with three fillers in it.
• Use a bridge phrase deliberately. “Let me put it another way”, “the reason is”, “so what that means is” — these are not fillers if you say them on purpose. They buy the same thinking time and sound like structure.

What not to do

Don't replace “um” with a different noise. “Like”, “you know” and “right?” become the new filler within a week. Don't speak more slowly across the whole sentence either; that produces the sing-song delivery people use when they are trying to sound measured.

And don't count fillers while you speak. Counting is a review activity. During the answer, the only thing you should be monitoring is whether the sentence has ended.

A five-minute drill

Record a 45-second answer to a question you know well, such as “what are you working on this week?”. Play it back and mark only the fillers that come before the first real word of a sentence.

Then record it again, with one rule: after each full stop, close your mouth and breathe before starting the next sentence. That is it. Most people lose half their fillers on the second take, not because they tried harder, but because they built a place for the hesitation to go.

If you want the number rather than the impression, the filler word counter measures it from a recording, and the speaking test puts it next to pace, pauses and structure.