How to Stop Saying Um in Interviews (2026 Guide)

How to Stop Saying Um in Interviews

To stop saying um in interviews, replace the filler with a deliberate silent pause: when you feel an "um" coming, close your mouth and let the gap sit for one beat instead of filling it. Silence reads as composure; "um" reads as uncertainty. That single swap, drilled out loud until it becomes reflex, is the fastest way to sound more confident under pressure, and it's the core of this guide.

Most interview advice obsesses over what you say, the frameworks, the STAR stories, the perfect answer to "tell me about yourself." Almost none of it addresses how you say it. Yet your verbal delivery, the ums, the "likes," the trailing "you knows," shapes whether an interviewer reads you as confident or shaky long before they grade the content. The good news: filler words are a fixable habit, not a fixed trait. This 2026 guide gives you the research on why they cost you, a self-diagnosis loop to measure your own rate, and a practice plan that rewires the habit, because reading about fillers has never once removed one.

Why Filler Words Quietly Cost You the Interview

Filler words lower how credible, competent, and likeable you seem, and interviewers register this before they consciously notice it. This isn't a matter of opinion. A 2x2 factorial experiment (N=145) at Cal Poly found that the more filler words a speaker used, the lower they were rated in both professional and personal credibility, regardless of the speaker's gender ¹. Every "um" is a tiny withdrawal from the credibility account you're trying to build in 30 minutes.

There's a perception gap that makes this riskier than it looks. That same study found male listeners rated vocal fillers significantly more negatively than female listeners did ¹. Sociolinguist Valerie Fridland of the University of Nevada, Reno, noted in a Stanford GSB interview that discourse markers like "um" and "like" are used more by younger women, while older men tend to view them most unfavorably, creating a professional perception gap that can disadvantage candidates whose interviewer skews older or male ². You can't control who interviews you, but you can control the habit they'll judge.

The stakes go beyond a single interview. An Intelligent.com survey of 966 business leaders (conducted August 2024) found that 53% of hiring managers believe recent Gen Z college graduates have poor communication skills, and 39% of companies cited poor communication as a reason recent graduate hires underperformed ³. Polished delivery is one of the fastest ways to signal you're the exception, and it compounds over a career: Novoresume's report, citing LinkedIn survey data, found that 59% of hiring managers consider public speaking skills important when evaluating candidates, and confident speakers are 70% more likely to reach management-level positions ⁴.

How Many Filler Words Is "Too Many"?

A normal speaker produces filler words far more often than they realize, roughly 6 to 10% of everything they say spontaneously. Linguist Mark Liberman estimates that "um" and "uh" alone appear roughly every 60 words in natural speech, comprising 6 to 10% of total words spoken ⁵. A baseline rate is human and expected. The problem is when stress, the exact condition of an interview, pushes that rate up.

Interviews are precisely the situation that inflates your filler rate. A 2024 cross-linguistic study in Frontiers in Psychology found that English speakers produced an average of 5.24 filler particles per 100 words, and that filler usage was consistently higher in formal situations (5.97%) than informal ones (4.41%) ⁶. An interview is the most formal speaking situation most people face, so your everyday rate likely undercounts your interview rate.

To make this concrete, Toastmasters International cites a conservative estimate of about 6 vocalized disfluencies per 100 words in spontaneous speech, meaning a typical speaker at 150 words per minute produces about 9 filler words per minute ⁷. In a 30-minute interview where you talk half the time, that's roughly 135 ums. The goal isn't zero, which sounds robotic, but getting from 9 a minute toward 2 or 3 is a dramatic, audible improvement.

That ~2% target isn't arbitrary. Avoma's analysis of over 1 million B2B sales calls found that filler word usage above 5% of total words correlated with a significant decline in close rates, and that prospects became disengaged within the first 30 seconds when "like" was used three or more times, but moderate use around 2% did not negatively affect outcomes ⁸. Aim for 2%, not zero.

The Strategic-Pause Reframe: Replace Um With Silence

The single most effective fix is to stop trying to eliminate the um and instead replace it with a deliberate pause. Fillers exist for a reason, they're verbal placeholders that signal "I'm still talking, don't interrupt" while your brain assembles the next phrase. You can't just delete the placeholder; you have to substitute a better one. The better one is silence.

This reframe matters because most people fight fillers the wrong way. They try to talk faster to outrun the um, which makes it worse, or they tense up trying not to say it, which floods working memory and produces more. The pause does the opposite: it buys your brain the half-second it needed, signals composure rather than panic, and sounds better to the listener than fluent rambling does.

Here's why the pause feels riskier than it is: a one-second silence feels like five seconds to the speaker, but to the listener it reads as thoughtful and deliberate. Interviewers rarely penalize a candidate who takes a beat before answering, they often reward it, because it signals you're considering the question rather than reciting. The discomfort is entirely yours, and it fades fast with practice.

The strategic pause also fixes a related problem: pace. Filler words spike when you talk too fast for your thoughts to keep up. Building deliberate pauses into your delivery, at the end of sentences, before a key point, after a question, slows your overall pace into a range where your brain isn't constantly outrunning your mouth. Slower, paused speech and fewer fillers are the same fix.

The Self-Diagnosis Loop: Record, Count, Drill

You cannot fix a filler habit you can't measure, and you cannot measure it without hearing yourself. This is the part almost everyone skips, and the part that actually works. The loop has three steps, and you repeat it.

1. Record. Answer a real interview question out loud, recorded, with no script. Use your phone's voice memo app. "Tell me about yourself" or "walk me through a time you solved a hard problem" work well because they're open-ended enough to expose your natural fillers. Two minutes is plenty.
2. Count. Play it back and tally every "um," "uh," "like," "you know," "so," and "basically." Divide by your total word count, then multiply by 100 to get your rate per 100 words. The first playback is genuinely uncomfortable, that discomfort is the point. You're now hearing what the interviewer hears.
3. Drill. Answer the same question again, out loud, applying the strategic pause at every filler trigger. Record it again. Count again. Watch the number drop. Then move to a new question.

This loop is non-negotiable because filler words are subconscious. You don't hear yourself say "um" in real time, which is exactly why you can't fix it by intending to. The recording externalizes the habit so your conscious brain can finally see it. Awareness is most of the battle: once you've heard your own rate, you start catching the ums in the moment, the first step to swapping in the pause.

Why Spoken Practice Is the Only Real Fix

Filler words are a problem you can only solve by speaking, because they only exist when you speak. Yet the entire interview-prep industry is built around silent practice, reading sample answers, browsing question banks, typing responses into an AI chat. None of those tools can detect, measure, or correct a single um, because none of them ever hear your voice. That's a structural limitation, not a feature gap.

Real-time feedback works, and the timing matters precisely. A 2025 wearable-technology study (the WSCoach arXiv preprint by Zhang Youpeng et al.) tested real-time auditory feedback to reduce filler words, and its pilot found that feedback delays under 2 seconds were required for speakers to correctly attribute the alert to a specific filler word ⁹. To break the habit you need to be cued while you're speaking, not in a written report you read an hour later. After-the-fact transcripts help you measure; in-the-moment cues help you change.

There's also an anxiety dimension only spoken practice addresses. A 2024 study in Current Psychology found that roughly 61% of university students report experiencing public speaking fear, with age, gender, and educational level as significant predictors ¹⁰. Filler words spike under exactly this anxiety, and the only known way to desensitize to it is repeated exposure to the pressure of speaking under evaluation. Reading can't desensitize you to a feeling you only get when you open your mouth in front of someone. If interview nerves are your real blocker, our guide on how to handle a stress interview pairs directly with the delivery work here.

How HiredKit Differs From Silent Prep Tools

The structural problem with most interview prep is that it's silent, so it physically cannot surface a verbal delivery habit. A question bank shows you words on a screen; ChatGPT hands you a paragraph to read; a flashcard app tests recall. None of them ever hear you say "um," so none can help you stop. The only tool that fixes a spoken habit is one that holds a real spoken conversation.

The HiredKit AI Interview Simulator is built for exactly this gap. It holds a real spoken, two-way conversation, so you have to say your answers out loud the way you will in the room, the only condition under which your filler habits actually appear. Its free Stage-1 live voice mock lets you run that test at no cost, and the full transcript afterward gives you the recording for the count step of the self-diagnosis loop, no separate voice-memo app required.

The feature that maps most directly to filler words is Rupert, the live in-ear AI coach. Mid-interview, you can switch to Rupert for in-the-moment help, and because the cue arrives while you're still speaking, exactly the under-2-second window the research says you need ⁹, it can flag when you're rushing your pace or skipping the strategic pause, nudging you to slow down before the next answer. Coaching, not answers, and a live nudge a written report can't replicate.

Before the mock, the Likely Questions tool tells you which questions your role and seniority will actually draw, so you drill your pause technique on the answers that matter. Then you run the record-count-drill loop against a real spoken interviewer instead of a silent screen. For the high-stakes opener where fillers do the most damage, pair this with our breakdown of how to answer 'tell me about yourself', the first 30 seconds is where disengagement happens fastest ⁸.

Frequently Asked Questions

How do I stop saying um in interviews?

Replace the um with a deliberate silent pause: when you feel an um rising, close your mouth and let one beat of silence sit instead of filling it. Silence reads as composed; um reads as uncertain. Then run a record-count-drill loop, record an answer, count your fillers, re-record applying the pause, until the swap becomes automatic.

Do filler words actually hurt you in an interview?

Yes. A Cal Poly experiment (N=145) found more filler words lowered a speaker's rated professional and personal credibility regardless of gender, and male listeners rated fillers significantly more negatively ¹. With 53% of hiring managers already concerned about recent graduates' communication skills ³, polished delivery signals you're the exception.

How many filler words is too many?

The research-backed safe zone is around 2% of your words; problems begin above 5% ⁸. The average unpracticed speaker runs 6 to 10% ⁵, and formal situations like interviews push the rate higher than casual speech (5.97% vs 4.41%) ⁶. Aim for about 2%, not zero, since zero sounds robotic.

Why can't I just read tips to stop saying um?

Because filler words are a subconscious motor habit, not a knowledge gap. You don't hear yourself say um in real time, so intending to stop doesn't work. The only fix is repeated spoken practice with feedback. Silent tools, question banks, flashcards, ChatGPT, never hear your voice, so they can't detect or correct a delivery habit.

Is pausing in an interview a bad thing?

No, a brief pause is an asset. A one-second silence feels long to you but reads as thoughtful and deliberate to the interviewer, who often rewards a candidate who takes a beat before answering. A deliberate pause is exactly what you swap in to replace the um.

The Bottom Line

Every other interview guide tells you what to say. The candidates who win also control how they say it. Filler words quietly drain your credibility ¹, spike under exactly the pressure an interview creates ⁶, and can't be fixed by reading, because they're a spoken habit, not a knowledge gap. The fix is simple and repeatable: swap the um for a deliberate pause, then run the record-count-drill loop out loud until the swap is reflex. Only spoken practice surfaces and rewires a delivery habit.

Ready to hear your own fillers and drill them out, out loud, against a real interviewer with a live coach flagging your pace in the moment? Practice your delivery with the free HiredKit live voice mock and walk in sounding as confident as your answers actually are.