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.
How to pronounce nuclear in American English
NOO·klee·er
Start here
Americans pronounce nuclear as NOO-klee-er (/ˈnukliər/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "Nuclear fusion powers the sun and other stars".
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Sound by sound
Every sound in "nuclear".
3 syllables, 6 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
oo/u/
Round your lips into a tight circle. Let your tongue rest in the middle of your mouth, slightly raised.
k/k/
Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.
l/l/
Place the tip of your tongue against the alveolar ridge just behind your top front teeth, the same contact point as /t/, /d/, and /n/. The difference is what happens to the air: for /l/, you let it flow continuously around the <em>sides</em> of the tongue (that's why /l/ is called a lateral). Turn your voice on the whole time. Lips stay relaxed, no rounding or flaring. For the Dark L variant at the end of a syllable, also pull the back of the tongue up and back toward the soft palate.
ee/i/
Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.
er/ər/
Relax your mouth and lift the tongue back and up. Keep the lips neutral.
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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 NOO — keep everything else short and quick.
noo·KLEE·ER→NOO·klee·er
02
Pronouncing the "R" too clearly.
Americans use a relaxed retroflex R — the tongue curls back rather than rolling. The R is one continuous sound with the vowel before it, not two separate sounds.
… (no R)→… r (curl the tongue)
Questions
Questions people ask about this.
How is "nuclear" stressed in American English?
Stress falls on the first syllable — say "NOO" with a longer, fuller vowel and keep every other syllable short and quick. The respell "NOO-klee-er" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
How do I pronounce the R in "nuclear"?
Americans use a relaxed retroflex R: the tongue curls back rather than rolling, and the R is one continuous sound with the vowel before it — not two separate sounds. Don't try to pronounce a separate vowel followed by a separate R. Treat them as a single shape.
Is the American pronunciation of "nuclear" 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 "NOO-klee-er" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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