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 soundly in American English
SOWND·lee
Start here
Americans pronounce soundly as SOWND-lee (/ˈsaʊndli/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "Sleep soundly".
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Sound by sound
Every sound in "soundly".
2 syllables, 6 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
ow/aʊ/
Start with a dropped jaw and flat tongue. Glide into a relaxed, slightly rounded lip position as the back of the tongue stretches up.
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.
d/d/
Touch the tip of your tongue to the roof of your mouth just behind your teeth. Add vocal cord vibration as you release.
l/l/
Place the tip of your tongue against the alveolar ridge just behind your top front teeth, the same contact point as /t/, /d/, and /n/. The difference is what happens to the air: for /l/, you let it flow continuously around the <em>sides</em> of the tongue (that's why /l/ is called a lateral). Turn your voice on the whole time. Lips stay relaxed, no rounding or flaring. For the Dark L variant at the end of a syllable, also pull the back of the tongue up and back toward the soft palate.
ee/i/
Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.
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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
Releasing the final consonant with a puff of air.
In "soundly", the "d" is not released — the articulators get into position but hold without the burst of air. Air stops but there's no release burst — the articulators hold position.
soundly→SOWND·lee
02
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch SOWND — keep everything else short and quick.
sownd·LEE→SOWND·lee
Questions
Questions people ask about this.
How is "soundly" stressed in American English?
Stress falls on the first syllable — say "SOWND" with a longer, fuller vowel and keep every other syllable short and quick. The respell "SOWND-lee" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Is the American pronunciation of "soundly" 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 "SOWND-lee" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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