a/æ/
Drop the jaw noticeably. Keep the body of the tongue low and forward, and don't let the back of the tongue raise toward the soft palate. Pull the lip corners back slightly, almost a starting smile.
How to pronounce alkalinity in American English
al·kuh·LIH·nuh·tee
Start here
Americans pronounce alkalinity as al-kuh-LIH-nuh-tee (/ˌælkəˈlɪnəɾi/). In "alkalinity", the "t" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. This is called the Flap T, a hallmark of natural-sounding American speech. It comes out as AL·kuh·LIH·nuh·tee. Stress falls on the third syllable — keep everything else short and quick. You'll hear it in sentences like "The ph scale measures the acidity or alkalinity of a solution".
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Sound by sound
Every sound in "alkalinity".
5 syllables, 10 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
l/l/
DarkKeep the tongue tip down and pull the back of the tongue up toward the throat. The 'dark' sound comes from the back.
k/k/
Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
l/l/
SyllabicThe schwa before L disappears — L becomes the vowel of the syllable. Go straight from the previous consonant to a Dark L.
ih/ɪ/
Drop your jaw slightly with relaxed lips. Touch the tongue tip behind the bottom front teeth and arch the top-front toward the roof.
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.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
t/t/
FlapQuickly bounce the front of your tongue against the roof of your mouth. Don't stop the airflow — just a quick tap.
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
Saying a hard "T" in the middle.
In "alkalinity", the "t" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. /t/ or /d/ becomes a quick tap [ɾ] — sounds like a soft D. The tongue briefly taps the ridge behind the upper teeth.
al-kuh-LIH-nuh-tee→AL·kuh·LIH·nuh·tee
02
Treating every L the same.
The L in "alkalinity" is a dark L — the back of the tongue rises toward the soft palate, adding a small "uh" quality before the L. Dark L adds a small schwa-like "uh" before the L. The back of the tongue lifts toward the soft palate.
alkalinity→AL·kuh·LIH·nuh·tee
03
Stressing the wrong syllable.
Stress falls on the third syllable, not the others. Stretch LIH — keep everything else short and quick.
AL·KUH·lih·NUH·TEE→AL·kuh·LIH·nuh·tee
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.
al·KUH·LIH·nuh·tee→AL·kuh·LIH·nuh·tee
Questions
Questions people ask about this.
How is "alkalinity" stressed in American English?
Stress falls on the third syllable — say "LIH" with a longer, fuller vowel and keep every other syllable short and quick. The respell "al-kuh-LIH-nuh-tee" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why doesn't the T sound like a T in "alkalinity"?
In American English, when /t/ sits between two vowels with the second one unstressed, it turns into a quick D-like flap. So "alkalinity" sounds closer to "al-kuh-LIH-nuh-tee" than to a crisp-T pronunciation. This is the flap-T rule, one of the most distinctive sounds of casual American speech.
Why does the second syllable in "alkalinity" 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 "al-kuh-LIH-nuh-tee" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "alkalinity" 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 "al-kuh-LIH-nuh-tee" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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