How to pronounce reinforce in American English

IPA /ˌriɪnˈfɔrs/ Syllables 3 · ree·ihn·fors Stress 3rd syllable

ree·ihn·FORS

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Americans pronounce reinforce as ree-ihn-FORS (/ˌriɪnˈfɔrs/). The R is one continuous sound with the vowel — the tongue curls back rather than rolling. Stress falls on the third syllable — keep everything else short and quick.

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Sounds

75%

Clarity

68%

Stress

78%

Intonation

65%

Fluency

62%

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72% Noticeable accent

Common mistakes

Stressing the wrong syllable.

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

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.

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In real conversation

Hear "reinforce" in the wild.

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"I rewrote my notes after class to reinforce the lecture content."

ahy ree·ROHT mahy NOHTS AF·ter KLAS tuh ree·ihn·FORS dhuh LEHK·cher KAHN·tehnt

Watch out

Common pronunciation mistakes in American English.

The textbook way isn't wrong — it's just not how anyone actually says it.

Stressing the wrong syllable.

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

REE·IHN·fors→REE·ihn·FORS

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 "reinforce" stressed in American English?

Stress falls on the third syllable — say "FORS" with a longer, fuller vowel and keep every other syllable short and quick. The respell "ree-ihn-FORS" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.

How do I pronounce the R in "reinforce"?

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 "reinforce" 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 "ree-ihn-FORS" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.

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Common mistakes

Stressing the wrong syllable.

Pronouncing the "R" too clearly.

Hear "reinforce" in the wild.

Words that work the same way.

Common pronunciation mistakes in American English.

Stressing the wrong syllable.

Pronouncing the "R" too clearly.

Questions people ask about this.

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