uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
How to pronounce investigation in American English
uhn·veh·stuh·GAY·shuhn
Start here
Americans pronounce investigation as uhn-veh-stuh-GAY-shuhn (/ənˌvɛstəˈɡeɪʃən/). Stress falls on the fourth syllable — keep everything else short and quick. You'll hear it in sentences like "The investigation is ongoing and no arrests have been made" or "The research grant funded our team's investigation for two years" — more examples below.
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Sound by sound
Every sound in "investigation".
5 syllables, 12 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.
v/v/
Lift your bottom lip so its inner edge (where the wet part meets the dry part) touches the very bottom of your top front teeth. Add vocal cord vibration as you blow air through.
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.
s/s/
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.
t/t/
Touch the tip or front edge of your tongue to the roof of your mouth just behind your teeth. Keep your jaw relaxed. Stop the air, then release with a puff.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
g/g/
Raise the back of your tongue to touch the soft palate. Add vocal cord vibration, then release.
ay/eɪ/
Start with your jaw slightly open and the front of your tongue forward and slightly up. Glide upward, your jaw closes a little more and your tongue arches higher toward the roof of the mouth.
sh/ʃ/
Flare your lips and lift the mid-front tongue close to the roof of your mouth. Blow air through without voicing.
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.
In real conversation
Hear "investigation" in the wild.
Click any sentence to see the full breakdown — every link, every reduction, every flap-T.
"The incident investigation revealed that proper procedures were not followed."
dhee IHN·suh·duhnt uhn·veh·stuh·GAY·shuhn ruh·VEELD dhuht PRAH·per pruh·SEE·jerz wer NAHT FAH·lohd
"The investigation is ongoing and no arrests have been made."
dhee uhn·veh·stuh·GAY·shuhn ihz AHN·goh·uhng and NOH uh·REHSTS huhv bihn MAYD
"The investigation revealed a complex network of illegal activities."
dhee uhn·veh·stuh·GAY·shuhn ruh·VEELD uh KAHM·plehks NEHT·wurk uhv uh·LEE·guhl ak·TIH·vuh·deez
"The research grant funded our team's investigation for two years."
dhuh REE·surch GRANT FUHN·duhd OW·er TEEMZ uhn·veh·stuh·GAY·shuhn fer TOO YEERZ
"The police launched an investigation into the mysterious disappearance."
dhuh puh·LEES LAHNCHT uhn uhn·veh·stuh·GAY·shuhn IHN·too dhuh muh·STEER·ee·uhs dih·suh·PEER·uhns
"The research question guided our investigation throughout the process."
dhuh REE·surch KWEHS·chuhn GAHY·duhd owr uhn·veh·stuh·GAY·shuhn throo·OWT dhuh PRAH·sehs
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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
Inserting a vowel before the syllabic consonant.
In "investigation", 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.
investigation→uhn·VEH·stuh·GAY·shuhn
02
Stressing the wrong syllable.
Stress falls on the fourth syllable, not the others. Stretch GAY — keep everything else short and quick.
UHN·VEH·STUH·gay·SHUHN→uhn·VEH·stuh·GAY·shuhn
03
Pronouncing the first 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.
UHN·veh·stuh·GAY·shuhn→uhn·VEH·stuh·GAY·shuhn
Questions
Questions people ask about this.
How is "investigation" stressed in American English?
Stress falls on the fourth syllable — say "GAY" with a longer, fuller vowel and keep every other syllable short and quick. The respell "uhn-veh-stuh-GAY-shuhn" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the first syllable in "investigation" 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 "uhn-veh-stuh-GAY-shuhn" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "investigation" 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 "uhn-veh-stuh-GAY-shuhn" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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