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 certainly in American English
SUR·tuhn·lee
Start here
Americans pronounce certainly as SUR-tuhn-lee (/ˈsɜrʔnli/). In "certainly", the "t" before the syllabic nasal becomes a glottal stop — a catch in the throat where the schwa drops and the nasal becomes syllabic. This is called the Glottal T, a small move that separates 'classroom' from 'native'. It comes out as SUR·tuhn·lee. Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The threat of rain is certainly real" or "Certainly, the service was worthy of hurt" — more examples below.
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Sound by sound
Every sound in "certainly".
3 syllables, 7 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
ur/ɜr/
Flare your lips and push them away from the face. Lift the middle of your tongue toward the roof of the mouth.
t/t/
GlottalStop the air at your vocal cords (like the catch in 'uh-oh'). Your tongue doesn't need to touch the roof.
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.
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.
In real conversation
Hear "certainly" in the wild.
Click any sentence to see the full breakdown — every link, every reduction, every flap-T.
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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 T before the syllabic N.
In "certainly", the "t" before the syllabic nasal becomes a glottal stop — a catch in the throat where the schwa drops and the nasal becomes syllabic. /t/ becomes a glottal stop [ʔ] — a catch in the throat. The schwa in the following syllable is dropped, making the nasal syllabic.
SUR-tuhn-lee→SUR·tuhn·lee
02
Inserting a vowel before the syllabic consonant.
In "certainly", 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.
certainly→SUR·tuhn·lee
03
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch SUR — keep everything else short and quick.
sur·TUHN·LEE→SUR·tuhn·lee
04
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.
SUR·TUHN·lee→SUR·tuhn·lee
Questions
Questions people ask about this.
How is "certainly" stressed in American English?
Stress falls on the first syllable — say "SUR" with a longer, fuller vowel and keep every other syllable short and quick. The respell "SUR-tuhn-lee" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the T sound silent in "certainly"?
It isn't fully silent — the T closes off into a tiny throat catch called a glottal stop, then the next sound comes through. The respell "SUR-tuhn-lee" reflects the audible result. Americans use this glottal-stop T whenever a /t/ sits between a stressed vowel and an N (or another /t/-like consonant) at the end of a word.
Why does the second syllable in "certainly" 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 "SUR-tuhn-lee" shows the reduced form so you can hear the casual rhythm directly.
How do I pronounce the R in "certainly"?
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.
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