b/b/
Press your lips together, add vocal cord vibration, then release.
How to pronounce butterfly in American English
BUH·ter·flahy
Start here
Americans pronounce butterfly as BUH-ter-flahy (/ˈbʌɾərˌflaɪ/). In "butterfly", the "t" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. This is called the Flap T, and it's why Americans sound more relaxed than the textbook. It comes out as BUH·ter·FLAHY. Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The butterfly emerged from its chrysalis with colorful wings" or "The lifecycle of a butterfly includes the caterpillar and pupa stages" — more examples below.
Now you try.
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Sound by sound
Every sound in "butterfly".
3 syllables, 7 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
t/t/
FlapQuickly bounce the front of your tongue against the roof of your mouth. Don't stop the airflow — just a quick tap.
er/ər/
Relax your mouth and lift the tongue back and up. Keep the lips neutral.
f/f/
Lift your bottom lip to touch the very bottom of your top front teeth. Blow air through this contact point without voicing.
l/l/
Place the tip of your tongue against the alveolar ridge just behind your top front teeth, the same contact point as /t/, /d/, and /n/. The difference is what happens to the air: for /l/, you let it flow continuously around the <em>sides</em> of the tongue (that's why /l/ is called a lateral). Turn your voice on the whole time. Lips stay relaxed, no rounding or flaring. For the Dark L variant at the end of a syllable, also pull the back of the tongue up and back toward the soft palate.
ahy/aɪ/
Start with your jaw open wide and your tongue resting low and flat. Glide the front of your tongue up toward the roof of your mouth as your jaw closes halfway.
In real conversation
Hear "butterfly" in the wild.
Click any sentence to see the full breakdown — every link, every reduction, every flap-T.
"The butterfly emerged from its chrysalis with colorful wings."
dhuh BUH·der·flahy uh·MURJD fruhm ihts KRIH·suh·luhs wihth KUH·ler·fuhl WIHNGZ
"The lifecycle of a butterfly includes the caterpillar and pupa stages."
dhuh LAHYF·sahy·kuhl uhv uh BUH·der·flahy uhn·KLOODZ dhuh KA·der·pih·ler and PYOO·puh STAY·juhz
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Watch out
Common pronunciation mistakes in American English.
The textbook way isn't wrong — it's just not how anyone actually says it.
01
Saying a hard "T" in the middle.
In "butterfly", the "t" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. /t/ or /d/ becomes a quick tap [ɾ] — sounds like a soft D. The tongue briefly taps the ridge behind the upper teeth.
BUH-ter-flahy→BUH·ter·FLAHY
02
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch BUH — keep everything else short and quick.
buh·TER·FLAHY→BUH·ter·FLAHY
03
Pronouncing the "R" too clearly.
Americans use a relaxed retroflex R — the tongue curls back rather than rolling. The R is one continuous sound with the vowel before it, not two separate sounds.
… (no R)→… r (curl the tongue)
Questions
Questions people ask about this.
How is "butterfly" stressed in American English?
Stress falls on the first syllable — say "BUH" with a longer, fuller vowel and keep every other syllable short and quick. The respell "BUH-ter-flahy" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why doesn't the T sound like a T in "butterfly"?
In American English, when /t/ sits between two vowels with the second one unstressed, it turns into a quick D-like flap. So "butterfly" sounds closer to "BUH-ter-flahy" than to a crisp-T pronunciation. This is the flap-T rule, one of the most distinctive sounds of casual American speech.
How do I pronounce the R in "butterfly"?
Americans use a relaxed retroflex R: the tongue curls back rather than rolling, and the R is one continuous sound with the vowel before it — not two separate sounds. Don't try to pronounce a separate vowel followed by a separate R. Treat them as a single shape.
Is the American pronunciation of "butterfly" different from British English?
American English uses different vowel shapes, a relaxed retroflex R, and connected-speech tricks like flap-T and glottal-stop T that British Received Pronunciation generally avoids. The respell "BUH-ter-flahy" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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