How to pronounce thirty in American English

IPA /ˈθɜrɾi/ Syllables 2 · thur·tee Stress 1st syllable

THUR·tee

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Americans pronounce thirty as THUR-tee (/ˈθɜrɾi/). The T between vowels softens into a quick D-like flap, so it sounds closer to a D than a crisp T. Stress falls on the first syllable — keep everything else short and quick.

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Sounds

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Clarity

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Stress

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Intonation

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Fluency

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72% Noticeable accent

Common mistakes

Saying a hard "T" in the middle.

In "thirty", 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.

Stressing the wrong syllable.

Stress falls on the first syllable, not the others. Stretch THUR — keep everything else short and quick.

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Why it sounds different

Why "thirty" sounds like THUR·tee.

In "thirty", 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, a hallmark of natural-sounding American speech. It comes out as THUR·tee.

In real conversation

Hear "thirty" in the wild.

Click any sentence to see the full breakdown — every link, every reduction, every flap-T.

"Can we push back the meeting time by about thirty minutes?"

kuhn wee PUUSH BAK dhuh MEE·duhng TAHYM bahy uh·BOWT THUR·dee MIH·nuhts

"He has an exam at ten thirty."

hee huhz uhn uhg·ZAM uht TEHN THUR·dee

"I have a meeting at eleven-thirty."

ahy hav uh MEE·duhng uht uh·LEH·vuhn THUR·dee

"I need about thirty minutes to finish this."

ahy NEED uh·BOWT THUR·dee MIH·nuhts tuh FIH·nihsh dhihs

"I think we should leave in thirty minutes."

ahy thihngk wee shuud LEEV uhn THUR·dee MIH·nuhts

"I try to read for thirty minutes every morning."

ahy TRAHY tuh reed fer THUR·dee MIH·nuhts EHV·ree MOR·nuhng

Watch out

Common pronunciation mistakes in American English.

The textbook way isn't wrong — it's just not how anyone actually says it.

Saying a hard "T" in the middle.

THUR-tee→THUR·tee

Stressing the wrong syllable.

Stress falls on the first syllable, not the others. Stretch THUR — keep everything else short and quick.

thur·TEE→THUR·tee

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 "thirty" stressed in American English?

Stress falls on the first syllable — say "THUR" with a longer, fuller vowel and keep every other syllable short and quick. The respell "THUR-tee" 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 "thirty"?

In American English, when /t/ sits between two vowels with the second one unstressed, it turns into a quick D-like flap. So "thirty" sounds closer to "THUR-tee" 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 "thirty"?

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 "thirty" 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 "THUR-tee" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.

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Common mistakes

Saying a hard "T" in the middle.

Stressing the wrong syllable.

Why "thirty" sounds like THUR·tee.

Hear "thirty" in the wild.

Words that work the same way.

Common pronunciation mistakes in American English.

Saying a hard "T" in the middle.

Stressing the wrong syllable.

Pronouncing the "R" too clearly.

Questions people ask about this.

Stop reading about "thirty". Start saying it.