How to Stop Saying Um and Like in Interviews With AI

Short answer: Filler words such as um and like buy thinking time, and in interviews they read as uncertainty. Reduce them by measuring a baseline, replacing each filler with a short pause, rehearsing structured answers until you stop composing aloud, and practicing under timed pressure. Expect gradual improvement, not elimination.

Why "Um" and "Like" Are Killing Your Interview Score

The brain produces filler words — "um," "uh," "like," "you know," "so," "right" — to buy time while the next sentence forms. In casual conversation, listeners filter them out. In an interview, where every second is being evaluated and (increasingly) scored by an algorithm, fillers are amplified. They register as uncertainty, lack of preparation, and lower seniority.

Research from the University of Michigan and follow-up work cited in Toastmasters' speaker training found that audiences rate speakers with more than 6 fillers per minute as significantly less confident and less competent — even when the underlying content is identical. If you are searching how to reduce filler words in interviews AI can help, you have already identified the highest-leverage improvement available in interview prep.

What Counts as a Filler Word (and What Does Not)

Word/phrase	Filler?	Notes
Um, uh, er	Yes — pure filler	Brain stalls; replace with silence
Like (as comparison)	Yes when overused	"It was like, really hard" — fine in moderation
You know, right?	Yes — verbal tic	Especially in tech interviews; sounds insecure
So (sentence opener)	Yes — overused	Starting every answer with "So…" is a recognized tic
Basically, literally	Yes when overused	Once per answer is fine; three times is a pattern
Actually, honestly	Borderline	Acceptable for emphasis; problematic as default opener
Pause / silence	NOT a filler	Pauses are powerful; trained speakers use them deliberately

The Four Causes of Filler Words (and Which AI Can Fix)

1. Thinking on the fly. Fillers buy time while you organize the next sentence. Fix: prepare structured answers so you are recalling, not composing.
2. Habit. Verbal tics persist because you cannot hear yourself in real time. Fix: AI feedback that surfaces the count and pattern.
3. Anxiety. Nervous systems produce fillers as a self-soothing behavior. Fix: practice under pressure repeatedly until the response calms.
4. Avoiding silence. Many people interpret silence as awkward and fill it. Fix: explicit reframing — silence reads as confident.

Items 1, 2, and 3 are exactly what AI mock interview tools are built to fix. Item 4 is a mindset shift you have to make consciously.

How an AI Interview Pace and Tone Analyzer Works

A modern mock interview filler word detector AI runs your audio through automatic speech recognition to produce a transcript, then applies a classifier trained on labeled filler vocabulary. The output is a per-minute filler count, a heat map of where in your answer the fillers cluster (almost always at the start of sentences and at logical transition points), and a comparison against benchmark speakers in your role.

Better tools layer in pace analysis — measured in words per minute — and tone variation, since flat monotone delivery correlates with lower interviewer ratings just as much as fillers do.

A four-week plan to cut filler words

Week 1: Measure your baseline

Record yourself answering 5 standard interview questions. Get a count of fillers per minute from a transcript or a speech tool. Your first number is only a baseline, and you will compare it against later weeks.

Week 2: The pause replacement drill

Re-record the same 5 questions. Every time you feel a filler coming, force a 1-second silence instead. Pauses feel longer to you than to the listener — a 2-second silence sounds normal, a 4-second silence sounds thoughtful, only past 6 seconds does it sound stuck.

Week 3: Structure to eliminate composition

Convert your top 8 STAR stories to bullet structure. Practice them 3 times each. The reason structure helps: when your brain knows the next bullet, it stops composing and starts recalling — and recall does not produce fillers the way composition does.

Week 4: Pressure simulation

Run timed mock interviews back-to-back. Pressure is when fillers come back. Train under pressure until your filler rate stays below baseline even when you are nervous.

Specific Techniques Pro Speakers Use

• The breath substitute. Replace every "um" with a slow inhale. The breath becomes the pause. After two weeks of practice it becomes automatic.
• Slowing down slightly. Many people speed up under pressure. A steady, conversational pace gives your brain composition time without needing fillers.
• Hand position. Resting hands lightly on the desk prevents the unconscious gesture cycle that often co-occurs with fillers.
• Chunking your answer. Three bullet points spoken in three units, with explicit pauses between, sounds dramatically more confident than one continuous stream.
• Closing strong. A clean final sentence — "and that is why I think the right approach is X" — eliminates the trailing "you know" that ends so many answers.

How to Practice With an AI Interview Confidence Tool

The fastest improvement comes from short, frequent sessions rather than long ones. Three 15-minute sessions per week beats one 60-minute marathon. Each session: do 3 questions, immediately review the AI feedback, re-record one question with conscious correction, then stop. The cognitive load of conscious filler suppression is genuinely high — short reps protect against the discouragement of plateauing.

Fix Filler Words With Aissence's Interview Speech Coach

After each Aissence mock interview, the debrief includes delivery signals alongside five scored dimensions (clarity, structure, specificity, relevance and role depth), and the full transcript so you can see your own filler words. Session history lets you compare the same answer across sessions to check whether the habit is fading. The feedback is a practice aid, and results vary from person to person.

Try Aissence's interview speech coach →

FAQ

How many filler words per minute is normal in an interview?

There is no single benchmark. Some filler words are normal in natural speech, and the goal is to keep them from distracting the listener or hiding your point. Compare your own count week to week rather than chasing a universal number.

Can I really stop saying "um" in just a few weeks?

You can usually reduce it noticeably with a few weeks of structured practice. Eliminating it entirely takes longer because it is a deeply automatic verbal habit. The goal is to get below the point where it distracts, not to be perfect.

Does AI mock interview practice actually help with confidence?

Yes — primarily through repeated exposure. Confidence in interviews is largely a function of how many times you have answered similar questions out loud. AI lets you do 10 mock interviews in a week without having to schedule with humans.

What if my filler words come back when I am nervous in the real interview?

Some regression is normal. Practicing under simulated pressure (timed sessions, video recording, consequence-stakes) shrinks the gap between your practice rate and your live rate. Pressure simulation is the bridge between practice fluency and live fluency.

Are filler words actually counted by HireVue and other AI scoring tools?

Yes. HireVue's NLP analysis measures language fluency, which includes filler word frequency. SparkHire and Yobs use similar metrics. On a scored video interview, reducing fillers directly raises your score.