How to pronounce index in American English

IPA /ˈɪndɛks/ Syllables 2 · ihn·dehks Stress 1st syllable
IHN·dehks
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Americans pronounce index as IHN-dehks (/ˈɪndɛks/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "I check the UV index before spending time at the beach" or "She invested in index funds for their low fees and diversification" — more examples below.

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Common mistakes

Stressing the wrong syllable.

Stress falls on the first syllable, not the others. Stretch IHN — keep everything else short and quick.

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Sound by sound

Every sound in "index".

2 syllables, 6 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.

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.

Mouth position for SIT Vowel
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.

Mouth position for /n/ as in NET
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.

Mouth position for /d/ as in DEN
eh/ɛ/

Drop your jaw moderately. Touch the tongue tip behind the bottom front teeth and lift the mid-front part slightly toward the roof.

Mouth position for BED Vowel
k/k/

Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.

Mouth position for /k/ as in KEY
s/s/

Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.

Mouth position for /s/ as in SUN
In real conversation

Hear "index" in the wild.

Click any sentence to see the full breakdown — every link, every reduction, every flap-T.

"I check the UV index before spending time at the beach."
ahy CHEHK dhuh yoo·VEE IHN·dehks buh·FOR SPEHN·duhng TAHYM uht dhuh BEECH
"She invested in index funds for their low fees and diversification."
shee ihn·VEH·stuhd uhn IHN·dehks FUHNDZ fer dher LOH FEEZ and duh·vur·suh·fuh·KAY·shuhn
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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

Stressing the wrong syllable.

Stress falls on the first syllable, not the others. Stretch IHN — keep everything else short and quick.

ihn·DEHKSIHN·dehks
Questions

Questions people ask about this.

How is "index" stressed in American English?
Stress falls on the first syllable — say "IHN" with a longer, fuller vowel and keep every other syllable short and quick. The respell "IHN-dehks" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Is the American pronunciation of "index" 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 "IHN-dehks" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.

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