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How to pronounce "lub dub" in English

lub dub is pronounced ˈlʌbˌdʌb, with primary stress on the “LUHB” syllable. Hear authentic native speakers pronounce it in 16 clips with synchronized subtitles and timestamps below.

ˈlʌbˌdʌb

LUHB·duhb

Primary stress: LUHB

Accent:
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1/16
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IPAˈlʌbˌdʌb
SayLUHB-duhb
SyllablesLUHB · duhb
Hear it in contextUS
12:47

thyroid problem, and even some athletes, you can get a third heart sound here. So, you have lub dub dum. Lub dub dum. Lub dub dum. You have to learn to sing if you're going to be a cardiologist. Pardon?

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Linguistic Pronunciation Masterclass: “lub dub”

Phonetic mechanics, syllable architecture, and conversational cadence

ˈlʌbˌdʌb

Syllable Architecture & Stress Distribution

Syllable 1Primary Stress

LUHB

Elevated pitch, sustained vowel length, and full acoustic clarity.

Syllable 2Unstressed

duhb

Reduced vowel sound, relaxed jaw, and minimal vocal effort.

Primary emphasis falls on the first syllable ("LUHB"). Raise your pitch and sustain the vowel length on this syllable while relaxing the surrounding syllables.

Common Pronunciation Traps & Learner Mistakes

⚠️ Unstressed Syllable Vowel Reduction (Schwa ⁄ə⁄)

The Trap: Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels.

How Native Speakers Say It: Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).

Connected Speech & Natural Conversational Flow

🔗 Consonant-Vowel Linking (Liaison)

When "lub dub" is followed by a word starting with a vowel, glide the final consonant into the opening vowel (e.g. "lub dub is" sounds like "lub dub-iz").

⏱️ Stress-Timed Rhythm

In natural sentences, avoid over-stressing "lub dub" unless it conveys the core contrast or focal point of your message.

Authentic Spoken Quotes from Native Video Context

Verified Transcripts
“So, you have lub dub dum. Lub dub dum. Lub dub dum.”
— StanfordWatch clip
“heartbeat of lub dub lub dub.”
— TEDx TalksWatch clip
Syllable Division for “lub dub”Rhymes for “lub dub”
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Practice Speaking “lub dub”

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IPA:ˈlʌbˌdʌb
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Target Phrase:

So, you have lub dub dum. Lub dub dum. Lub dub dum.

Hear it in context: “lub dub”

16 clips

The English word “lub dub” is transcribed in the International Phonetic Alphabet (IPA) as ˈlʌbˌdʌb (phonetic respelling: LUHB-duhb). Phonologically, it consists of 2 syllables (LUHB · duhb), with primary lexical stress placed on the 1st (initial) syllable (LUHB). Grammatically, “lub dub” functions as a noun. SayItVid indexes 16 authentic English video clips demonstrating how native speakers articulate “lub dub” in natural connected speech across American (US: 2 sampled), British (UK), and Australian (AUS) accents, including verified broadcasts from Stanford, TEDx Talks.

Spoken Video Transcripts & Contextual Quotes (2 Verified Clips)

  • 🇺🇸 USStanford
    Clip #1 · @12:47
    “thyroid problem, and even some athletes, you can get a third heart sound here. So, you have lub dub dum. Lub dub dum. Lub dub dum. You have to learn to sing if you're going to be a cardiologist. Pardon?”
  • 🇺🇸 USTEDx Talks
    Clip #2 · @6:35
    “heart rate, instead of a healthy patient that has a regular heartbeat of lub dub lub dub. With psychiatric patients, it was much more heightened. So, it was faster, like lub-dub lub-dub lub-dub lub-dub. So, heightened. So, it was faster, like lub-dub lub-dub lub-dub lub-dub. So,”

Definition & Meaning: “lub dub”

NOUN
  • The characteristic sound of the beating heart, caused by the closing of the heart valves.

Example Sentences (3)

  • “The physician listened closely to the steady lubdub of the patient's heart.”
  • “So, you have lub dub dum. Lub dub dum. Lub dub dum.”
  • “heartbeat of lub dub lub dub. With psychiatric patients, it was much more heightened. So, it was faster, like lub-dub lub-dub lub-dub lub-dub. So,”

Pronounce: “lub dub”

Pronunciation:
LUHB-duhb
Syllables:
LUHB · duhb
Written Hyphenation:
lub · dub
Primary stress:
LUHB
IPA:
ˈlʌbˌdʌb
Hear it in context
lub dub
📊 See full syllable breakdown, stress marks & rhythm for “lub dub”

Words that Sound Identical (Homophones)

Unique Sound
Explore 800+ homophone pairs

"lub dub" (⁄ˈlʌbˌdʌb⁄) has no true homophones in standard English — there are no other words with identical pronunciation. Unlike sound-alike pairs like there / their or peace / piece, "lub dub" has a completely distinct phonetic identity.

Frequently asked questions about lub dub

How do you pronounce “lub dub”?

“lub dub” is pronounced ⁄ˈlʌbˌdʌb⁄ (LUHB-duhb). Listen to the native-speaker clips above to hear it in real conversation.

How many syllables are in “lub dub”?

“lub dub” has 2 syllables: LUHB · duhb.

Where is the stress in “lub dub”?

The primary stress in “lub dub” is on “LUHB”. Listen for that stressed syllable in the clips above.

What does “lub dub” mean?

The characteristic sound of the beating heart, caused by the closing of the heart valves.

How can I hear “lub dub” used in real sentences?

This page has 16 real-world video examples of “lub dub” with synchronized subtitles. Use Previous / Next (or ← / → keys) to hear each one at the exact moment it is spoken.

What is the most common pronunciation mistake when saying “lub dub”?

Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels. Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).