How to pronounce The FUN Vowel /ʌ/ in American English

One of the most common vowels in American English. Hear it in fun, cup, sun, but.

IPA /ʌ/ Respell uh Category Vowel

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The /ʌ/ and /ə/ vowels, the fun sound, are the most relaxed, neutral sounds in American English, used in words like cup, sun, about, and sofa. To make this "uh" sound, let your lips, jaw, and tongue completely relax, dropping your jaw just a tiny bit while keeping your tongue flat. The /ʌ/ vowel is the stressed version of this relaxed sound; its twin, the schwa /ə/, is the default sound for unstressed syllables across the language. Spoken American English leans hard on stress, so letting unstressed vowels collapse into this lazy shape is most of what makes you sound conversational instead of textbook.

How to make it

Three small adjustments.

Get them right and the sound takes care of itself.

Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.

Mouth shape

/ʌ/ as in fun

Jaw

Drops slightly, just a relaxed, easy drop.

Tongue

Completely relaxed. It rests neutrally in the middle of the mouth, with the tip resting gently behind the bottom teeth.

Lips

Relaxed and neutral, everything should feel easy and relaxed.

Quick tips

Two things to remember.

Keep your face really relaxed: your lips, jaw, cheeks, and neck should all feel completely neutral.

The schwa is the most common vowel sound in American English and appears in many unstressed syllables.

Hear it in words

16 everyday words.

Tap any word for its full breakdown — every reduction, every flap-T.

Hear it in sentences

In real conversation.

5 short sentences where this sound shows up. Tap to play; click the title for the full breakdown.

The literature review synthesizes findings from multiple studies.

dhuh LIH·duh·ruh·chur ruh·VYOO SIHN·thuh·sahy·zuhz FAHYN·duhngz fruhm MUHL·tuh·puhl STUH·deez.

Democratic institutions must be protected from authoritarian tendencies.

deh·muh·KRA·tuhk ihn·stuh·TOO·shuhnz muhst bee pruh·TEHK·tuhd fruhm uh·thor·uh·TAIR·ee·uhn TEHN·duhn·seez.

Quantum mechanics studies the behavior of particles at the atomic level.

KWAHN·tuhm muh·KA·nuhks STUH·deez dhuh buh·HAY·vyer uhv PAR·tuh·kuhlz uht dhee uh·TAH·muhk LEH·vuhl.

Developing effective study techniques requires consistent discipline and motivation.

duh·VEH·luh·puhng uh·FEHK·tuhv STUH·dee tehk·NEEKS ruh·KWAHYRZ kuhn·SIH·stuhnt DIH·suh·pluhn and moh·duh·VAY·shuhn.

Streaming services have disrupted the traditional entertainment industry.

STREE·muhng SUR·vuh·suhz huhv duhs·RUHP·tuhd dhuh truh·DIH·shuh·nuhl ehn·ter·TAYN·muhnt IHN·duh·stree.

Where this sound transforms

Connected-speech rules involving /ʌ/.

Each rule has its own page with examples and practice tips.

Rule 18

Reduced Words (to, for, of)

Full vowel reduces to schwa /ə/ or other weak vowel. Consonants may simplify.

Rule 21

Short Contractions (it's, that's)

In single-syllable -ts contractions (it's = it + is, that's = that + is, what's = what + is, let's = let + us), the unstressed vowel of the enclitic ("is" /ɪ/ or "us" /ə/) is completely elided in fast speech, leaving only the final /ts/ cluster.

FAQ

Common questions about /ʌ/.

What is the difference between the /ʌ/ vowel and the schwa /ə/?

Technically, they are the exact same mouth shape, just used with different levels of energy. The /ʌ/ vowel shows up in stressed syllables like fun, cup, and butter, so it gets a little more volume and a tiny bit more jaw drop. The schwa /ə/ is the exact same "uh" sound, but it only happens in unstressed, fast syllables like the start of about or the end of sofa. Americans treat them as the exact same relaxed sound.

Why is the schwa /ə/ so important in American English?

It's the most common vowel in the entire language because American English is heavily stress-timed. When Americans stress a syllable, it gets longer and louder, and the surrounding unstressed syllables get crushed down into this lazy "uh" sound. If you pronounce every vowel exactly how it's spelled, saying to-day instead of tuh-DAY, you'll sound robotic. Letting unstressed vowels collapse into a schwa is most of what makes English sound American instead of careful.

How do I stop making the /ʌ/ sound like the /ɑ/ in "father"?

Drop your jaw less and let the tongue relax. Spanish and Japanese speakers often open their mouths too wide for color or sun, turning them into CAH-lor or SAHN. The American /ʌ/ requires almost no effort: lips don't round, jaw barely opens, tongue rests neutrally in the middle of the mouth. If you feel like you're barely opening your mouth to speak, you're probably doing it right.