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.
How to pronounce deepen in American English
DEE·puhn
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Americans pronounce deepen as DEE-puhn (/ˈdipən/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "He taught the material to others to deepen his understanding".
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Sound by sound
Every sound in "deepen".
2 syllables, 5 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
ee/i/
Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.
p/p/
Press your lips together to stop the air, then release. No vocal cord vibration.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
n/n/
SyllabicThe schwa before N disappears — N becomes the vowel of the syllable. Go straight from the previous consonant to N.
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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
Inserting a vowel before the syllabic consonant.
In "deepen", the short unstressed vowel before "n" disappears — the schwa is absorbed and the "n" becomes the syllable nucleus on its own. Schwa is absorbed — consonant becomes the syllable nucleus.
deepen→DEE·puhn
02
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch DEE — keep everything else short and quick.
dee·PUHN→DEE·puhn
03
Pronouncing the unstressed 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.
DEE·PUHN→DEE·puhn
Questions
Questions people ask about this.
How is "deepen" stressed in American English?
Stress falls on the first syllable — say "DEE" with a longer, fuller vowel and keep every other syllable short and quick. The respell "DEE-puhn" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the second syllable in "deepen" 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 "DEE-puhn" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "deepen" 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 "DEE-puhn" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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