How to pronounce “commercially”
Commercially is pronounced /kəˈmɜːrʃəliː/. It has 4 syllables, and the beat falls on the second one — mɜːr. Below: the syllable split, native audio in both accents, the mistake people actually make with this word, and every individual sound in it explained.
Syllables and stress
Split it into 4 beats. The highlighted syllable is the strong one: say it louder, longer and a touch higher in pitch, and let the others fall away. English is a stress-timed language, so getting mɜːr in the right place matters more to a listener than getting every vowel perfect.
Stress pattern oOoo — capital letters mark the stressed beats.
The common mispronunciation of “commercially”
✗ Often said: /ˈkɑːmərkɪæliː/ — the spelling, read straight off the page.
✓ Actually: /kəˈmɜːrʃəliː/
Why the two come apart: the stress lands on the second syllable (“mɜːr”), not on the first one — putting the beat at the front is the mistake almost everyone makes; also, the unstressed vowels flatten all the way down to /ə/ — English swallows them, so they never sound the way they are written; also, at least one vowel does not say what its spelling suggests — English vowel letters are not reliable here; also, a consonant letter takes an unexpected sound value here, so reading it "as written" comes out wrong.
This is why reading English aloud from spelling alone goes wrong so often: the letters of “commercially” are not a reliable map of its sounds. The IPA is — each symbol stands for exactly one sound, every time.
“commercially” sound by sound
“commercially” is built out of 8 sounds. Say each one on its own first, slowly, then run them together at speed. Every sound links to a full guide with mouth position, the mistake learners make with it, and other words that use it.
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kRaise the back of the tongue to touch the soft palate, seal the air, then release it with a puff.
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əDo almost nothing: leave the tongue in its neutral resting position, mouth slightly open, and make the shortest, weakest possible vowel.
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mClose the lips, lower the soft palate and let the voiced air come out through the nose.
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ɜːrHold the tongue central and bunched or curled back for the whole vowel, with the R quality present from beginning to end — it is one continuous r-coloured vowel, not a vowel plus an /r/.
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ʃPull the tongue slightly back from the /s/ position, spread the blade wide behind the ridge, round the lips a little, and push air through with no voice.
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əDo almost nothing: leave the tongue in its neutral resting position, mouth slightly open, and make the shortest, weakest possible vowel.
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lTouch the tongue tip to the ridge behind the upper teeth and let the voiced air flow around the sides of the tongue.
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iːSpread the lips into a smile, push the front of the tongue high and forward, and hold the sound tense and long.
Questions people ask about “commercially”
- How do you pronounce “commercially”?
- “commercially” is pronounced /kəˈmɜːrʃəliː/, with the stress on the second syllable (mɜːr). Press the US or UK button above to hear it spoken.
- How many syllables are in “commercially”?
- “commercially” has 4 syllables: kə · mɜːr · ʃə · liː. The stress pattern is oOoo.
- What is the common mispronunciation of “commercially”?
- People read it off the spelling as /ˈkɑːmərkɪæliː/, but it is actually /kəˈmɜːrʃəliː/, because the stress lands on the second syllable (“mɜːr”), not on the first one — putting the beat at the front is the mistake almost everyone makes.
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