a/æ/
NasalizedThe tongue relaxes down in the back and the corners of the lips relax before the consonant. This adds a schwa-like 'uh' relaxation after the /æ/. Think of it as 'relaxing out of the vowel' — it is no longer a pure /æ/ sound.
How to pronounce antibiotics in American English
an·tee·bahy·AH·tuhks
Start here
Americans pronounce antibiotics as an-tee-bahy-AH-tuhks (/ˌæntibaɪˈɑɾɪks/). In "antibiotics", the "t" right after N is dropped — the tongue skips the T stop and moves directly from the N position to the next sound. This is called the Silent T after N, the kind of sound shift that makes everyday speech feel effortless. It comes out as AN·tee·bahy·AH·tuhks. Stress falls on the fourth syllable — keep everything else short and quick. You'll hear it in sentences like "She felt much better after taking the prescribed antibiotics" or "Antibiotics are used to treat bacterial infections effectively" — more examples below.
Now you try.
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Sound by sound
Every sound in "antibiotics".
5 syllables, 11 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
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.
t/t/
DroppedThe T is skipped entirely. Your tongue doesn't make contact at the T position.
ee/i/
Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.
b/b/
Press your lips together, add vocal cord vibration, then release.
ahy/aɪ/
Start with your jaw open wide and your tongue resting low and flat. Glide the front of your tongue up toward the roof of your mouth as your jaw closes halfway.
ah/ɑ/
Relax your lips and drop your jaw significantly. The tongue tip lightly touches behind the bottom front teeth and the back part of the tongue presses down a little to create more dark space in the back of the mouth.
t/t/
FlapQuickly bounce the front of your tongue against the roof of your mouth. Don't stop the airflow — just a quick tap.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
k/k/
Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.
s/s/
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.
In real conversation
Hear "antibiotics" in the wild.
Click any sentence to see the full breakdown — every link, every reduction, every flap-T.
"Antibiotics are ineffective against viral infections like the cold."
an·tee·bahy·AH·tuhks er ih·nuh·FEHK·tuhv uh·GEHNST VAHY·ruhl uhn·FEHK·shuhnz LAHYK dhuh KOHLD
"Antibiotics are used to treat bacterial infections effectively."
an·tee·bahy·AH·tuhks er YOOZD tuh TREET bak·TEER·ee·uhl uhn·FEHK·shuhnz uh·FEHK·tuhv·lee
"She felt much better after taking the prescribed antibiotics."
shee FEHLT muhch BEH·der AF·ter TAY·kuhng dhuh pruh·SKRAHYBD an·tee·bahy·AH·tuhks
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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
Pronouncing the silent T after N.
In "antibiotics", the "t" right after N is dropped — the tongue skips the T stop and moves directly from the N position to the next sound. /t/ is completely silent — the tongue skips the T stop and moves directly from the N position to the next sound.
antibiotics→AN·tee·bahy·AH·tuhks
02
Saying a hard "T" in the middle.
In "antibiotics", 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.
an-tee-bahy-AH-tuhks→AN·tee·bahy·AH·tuhks
03
Pronouncing the vowel before M/N too pure.
In "antibiotics", the "a" vowel before M or N raises and fronts toward [eə] — the tongue pulls up and forward, breaking the vowel into a tense glide as it anticipates the nasal. The "/æ/" vowel raises and fronts before M or N — tongue pulls up and forward, producing a tense [eə] glide (between /e/ and /ə/). Not a pure /æ/.
an-tee-bahy-AH-tuhks→AN·tee·bahy·AH·tuhks
04
Stressing the wrong syllable.
Stress falls on the fourth syllable, not the others. Stretch AH — keep everything else short and quick.
AN·TEE·BahY·AH·TUHKS→AN·tee·bahy·AH·tuhks
Questions
Questions people ask about this.
How is "antibiotics" stressed in American English?
Stress falls on the fourth syllable — say "AH" with a longer, fuller vowel and keep every other syllable short and quick. The respell "an-tee-bahy-AH-tuhks" 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 "antibiotics"?
In American English, when /t/ sits between two vowels with the second one unstressed, it turns into a quick D-like flap. So "antibiotics" sounds closer to "an-tee-bahy-AH-tuhks" 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 fifth syllable in "antibiotics" 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 "an-tee-bahy-AH-tuhks" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "antibiotics" 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 "an-tee-bahy-AH-tuhks" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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