ih/ɪ/
Drop your jaw slightly with relaxed lips. Touch the tongue tip behind the bottom front teeth and arch the top-front toward the roof.
How to pronounce idioms in American English
IH·dee·uhmz
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Americans pronounce idioms as IH-dee-uhmz (/ˈɪdiəmz/). In "idioms", 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. So instead of IH·tee·uhmz, you get IH·dee·uhmz. Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "I learned a lot of slang and idioms from watching television shows".
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Sound by sound
Every sound in "idioms".
3 syllables, 6 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
d/d/
FlapQuickly bounce the front of your tongue against the roof of your mouth. Same as Flap T — a quick tap without stopping airflow.
ee/i/
Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
m/m/
SyllabicThe schwa before M disappears — M becomes the vowel of the syllable. Go straight from the previous consonant to M.
z/z/
Same position as S, but add vocal cord vibration. Feel the buzz.
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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 "idioms", 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.
IH-tee-uhmz→IH·dee·uhmz
02
Inserting a vowel before the syllabic consonant.
In "idioms", the short unstressed vowel before "m" disappears — the schwa is absorbed and the "m" becomes the syllable nucleus on its own. Schwa is absorbed — consonant becomes the syllable nucleus.
idioms→IH·dee·uhmz
03
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch IH — keep everything else short and quick.
ih·DEE·UHMZ→IH·dee·uhmz
04
Pronouncing the unstressed syllable too fully.
Don't pronounce the second syllable too fully. The unstressed syllable reduces to a schwa — the lazy "uh" sound — in casual speech.
IH·dee·UHMZ→IH·dee·uhmz
Questions
Questions people ask about this.
How is "idioms" stressed in American English?
Stress falls on the first syllable — say "IH" with a longer, fuller vowel and keep every other syllable short and quick. The respell "IH-dee-uhmz" 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 "idioms"?
In American English, when /t/ sits between two vowels with the second one unstressed, it turns into a quick D-like flap. So "idioms" sounds closer to "IH-dee-uhmz" than to a crisp-T pronunciation. This is the flap-T rule, one of the most distinctive sounds of casual American speech.
Why does the third syllable in "idioms" reduce to "uh"?
Unstressed syllables in American English collapse toward a schwa — a lazy, neutral "uh" sound. The full vowel is what textbooks teach, but in actual American speech every unstressed vowel reduces. The respell "IH-dee-uhmz" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "idioms" 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 "IH-dee-uhmz" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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