f/f/
Lift your bottom lip to touch the very bottom of your top front teeth. Blow air through this contact point without voicing.
How to pronounce 5k in American English
FAHYV·KAY
Start here
Americans pronounce 5k as FAHYV-KAY (/faɪv keɪ/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "She set a goal to run a 5k race within three months".
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Sound by sound
Every sound in "5k".
2 syllables, 5 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
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.
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.
k/k/
Raise the back of your tongue to touch the soft palate (velum). Stop the air, 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.
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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 FAHYV — keep everything else short and quick.
fahyv·KAY→FAHYV·KAY
Questions
Questions people ask about this.
How is "5k" stressed in American English?
Stress falls on the first syllable — say "FAHYV" with a longer, fuller vowel and keep every other syllable short and quick. The respell "FAHYV-KAY" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Is the American pronunciation of "5k" 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 "FAHYV-KAY" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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