uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
How to pronounce assume in American English
uh·SOOM
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Americans pronounce assume as uh-SOOM (/əˈsum/). Stress falls on the second syllable — keep everything else short and quick. You'll hear it in sentences like "Assume the uniform usage is usually futile".
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Sound by sound
Every sound in "assume".
2 syllables, 4 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
s/s/
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.
oo/u/
Round your lips into a tight circle. Let your tongue rest in the middle of your mouth, slightly raised.
m/m/
Press your lips together. Air flows through your nose. Vocal cords vibrate.
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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
Stressing the wrong syllable.
Stress falls on the second syllable, not the others. Stretch SOOM — keep everything else short and quick.
UH·soom→uh·SOOM
02
Pronouncing the first syllable too fully.
Don't pronounce the first syllable too fully. The unstressed syllable reduces to a schwa — the lazy "uh" sound — in casual speech.
UH·SOOM→uh·SOOM
Questions
Questions people ask about this.
How is "assume" stressed in American English?
Stress falls on the second syllable — say "SOOM" with a longer, fuller vowel and keep every other syllable short and quick. The respell "uh-SOOM" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the first syllable in "assume" 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 "uh-SOOM" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "assume" 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 "uh-SOOM" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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