How to pronounce viruses in American English

IPA /ˈvaɪrəsəz/ Syllables 3 · vahy·ruh·suhz Stress 1st syllable

VAHY·ruh·suhz

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Americans pronounce viruses as VAHY-ruh-suhz (/ˈvaɪrəsəz/). The unstressed syllable reduces to a lazy schwa — almost a quick "uh" — instead of being pronounced fully. Stress falls on the first syllable — keep everything else short and quick.

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Sounds

75%

Clarity

68%

Stress

78%

Intonation

65%

Fluency

62%

Overall assessment

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72% Noticeable accent

Common mistakes

Stressing the wrong syllable.

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

Pronouncing the unstressed 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.

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In real conversation

Hear "viruses" in the wild.

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"He is studying microbiology to understand bacteria and viruses."

hee ihz STUH·dee·uhng mahy·kroh·bahy·AH·luh·jee tuh uhn·der·STAND bak·TEER·ee·uh and VAHY·ruh·suhz

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 first syllable, not the others. Stretch VAHY — keep everything else short and quick.

vahy·RUH·SUHZ→VAHY·ruh·suhz

Pronouncing the unstressed 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.

VAHY·RUH·suhz→VAHY·ruh·suhz

Questions

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How is "viruses" stressed in American English?

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

Why does the second syllable in "viruses" 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 "VAHY-ruh-suhz" shows the reduced form so you can hear the casual rhythm directly.

Is the American pronunciation of "viruses" 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 "VAHY-ruh-suhz" 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 unstressed syllable too fully.

Hear "viruses" in the wild.

Words that work the same way.

Common pronunciation mistakes in American English.

Stressing the wrong syllable.

Pronouncing the unstressed syllable too fully.

Questions people ask about this.

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