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 supernova in American English
soo·per·NOH·vuh
Start here
Americans pronounce supernova as soo-per-NOH-vuh (/ˌsupərˈnoʊvə/). Stress falls on the third syllable — keep everything else short and quick. You'll hear it in sentences like "A supernova is the powerful explosion of a dying star".
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Sound by sound
Every sound in "supernova".
4 syllables, 8 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
oo/u/
Round your lips into a tight circle. Let your tongue rest in the middle of your mouth, slightly raised.
p/p/
Press your lips together to stop the air, then release. No vocal cord vibration.
er/ər/
Relax your mouth and lift the tongue back and up. Keep the lips neutral.
n/n/
Touch the tip or front edge of your tongue to the roof of your mouth behind your teeth. Air flows through your nose.
oh/oʊ/
Start with your mouth slightly open, then close your jaw slightly as your lips round. Shift your tongue back slightly, then stretch the back up.
v/v/
Lift your bottom lip so its inner edge (where the wet part meets the dry part) touches the very bottom of your top front teeth. Add vocal cord vibration as you blow air through.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
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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 third syllable, not the others. Stretch NOH — keep everything else short and quick.
SOO·PER·noh·VUH→SOO·per·NOH·vuh
02
Pronouncing the unstressed syllable too fully.
Don't pronounce the third syllable too fully. The unstressed syllable reduces to a schwa — the lazy "uh" sound — in casual speech.
soo·per·NOH·VUH→SOO·per·NOH·vuh
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 "supernova" stressed in American English?
Stress falls on the third syllable — say "NOH" with a longer, fuller vowel and keep every other syllable short and quick. The respell "soo-per-NOH-vuh" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the fourth syllable in "supernova" 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 "soo-per-NOH-vuh" shows the reduced form so you can hear the casual rhythm directly.
How do I pronounce the R in "supernova"?
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 "supernova" 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 "soo-per-NOH-vuh" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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