s/s/
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.
How to pronounce serious in American English
SEER·ee·uhs
Start here
Americans pronounce serious as SEER-ee-uhs (/ˈsɪriəs/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The serious scientist assessed the fossil guess".
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Sound by sound
Every sound in "serious".
3 syllables, 5 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
eer/ɪr/
Start with the high 'ih' position. Pull the tongue back and up while flaring the lips slightly.
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.
s/s/
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.
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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 first syllable, not the others. Stretch SEER — keep everything else short and quick.
seer·EE·UHS→SEER·ee·uhs
02
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.
SEER·ee·UHS→SEER·ee·uhs
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 "serious" stressed in American English?
Stress falls on the first syllable — say "SEER" with a longer, fuller vowel and keep every other syllable short and quick. The respell "SEER-ee-uhs" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the third syllable in "serious" 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 "SEER-ee-uhs" shows the reduced form so you can hear the casual rhythm directly.
How do I pronounce the R in "serious"?
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 "serious" 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 "SEER-ee-uhs" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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