2 syllables: Mu, cus. Stress on Mu.
MYOO-kuhs
/ˈmjukəs/
Mucus is pronounced MYOO-kuhs (/ˈmjukəs/). It has two syllables (Mu-cus), with the stress on "Mu". Mucus is a viscous, slippery secretion produced by mucous membranes to trap dust, microbes, and other particles. In humans, it lines the respiratory and digestive tracts, helping to protect and moisten surfaces. It can be found in airways during illness or allergies, and its consistency varies with hydration and health.
nounMucus is a viscous, slippery secretion produced by mucous membranes to trap dust, microbes, and other particles. In humans, it lines the respiratory and digestive tracts, helping to protect and moisten surfaces. It can be found in airways during illness or allergies, and its consistency varies with hydration and health.
"The doctor collected a sample of nasal mucus to test for infections."
"During a cold, the mucus in your throat can become thick and uncomfortable."
"The mucus lining of the sinuses helps filter out irritants."
Pronounce MU-cus with primary stress on the first syllable: /ˈmjuː.kəs/. The first syllable features a /m/ followed by an extended /juː/ vowel; the second syllable is a schwa-like /kəs/ with a final light /s/. In careful speech, ensure the /juː/ is clearly sustained before the /k/.
Common errors are saying /ˈmjuː.kəs/ with the /juː/ shortened or misplacing the stress as MU-cus with emphasis on the second syllable. Some speakers also reduce /juː/ to a simple /u/ or /ʊ/, yielding /ˈmuː.kəs/ or /ˈmʊ.kəs/. To correct, maintain a two-syllable rhythm with a clear /juː/ glide and keep stress on the first syllable. Finally, avoid turning the final /s/ into a /z/ sound in isolated word usage.
In US, UK, and AU, the initial /mjuː/ onset remains, with primary stress on the first syllable. Differences lie in vowel quality: US often has a slightly longer /juː/ with a light rhotic influence in connected speech, UK may sound a bit crisper with less vowel duration, and AU tends to be broader but still maintains /ˈmjuː.kəs/. The final /s/ remains voiceless in all three, though some rapid speech can make it sound like a voiceless alveolar fricative blended with following consonants.
The difficulty centers on the /juː/ glide after /m/ and the short, unstressed second syllable /kəs/. Many speakers misplace the /j/ or reduce /juː/ to /u/ or /uː/. The tensed, high-front vowel in /juː/ requires a smooth, rounded transition from /m/; then the /k/ closure followed by a light /s/ can blur in rapid speech. Practicing with minimal pairs and slow tempo helps anchor the two-syllable rhythm and exact mouth positions.
A unique aspect is the long, rounded /juː/ glide after the initial /m/, producing a two-syllable word with a distinct pause-into-glide before the /k/ onset. Ensure you avoid turning the /juː/ into a simple /u/ or /j/ cluster. Focus on a crisp /ɹ/ or /ɹ/ like US rhotic influence in connected speech where applicable, while keeping the /k/ clearly enunciated before the final /s/.
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Mucus comes from Latin mucus, meaning “slimy film” or “mucous discharge,” from mucosa (mucous membrane) and mucere, “to be moldy” or “to be damp.” The Latin mucous sense broadened through medieval Latin, retaining its physiological sense. In English, mucus first appeared in the 15th century, originally denoting a slimy coating; by the 17th century it began to also refer to the secretion produced by mucous membranes. Over time, the spelling varied with variants like mucosus in some texts, but mucus became standard. The term is closely tied to mucous (adj) and mucosa (noun), sharing the same root referring to the slippery, damp coating of surfaces. In medical language, mucus is distinguished from phlegm, typically used for esp. expectorated material, though in common speech the terms are sometimes interchanged. The concept of mucus has long been central to understanding respiratory health, host defense, and hydration status, influencing clinical descriptions of colds, allergies, sinusitis, and other conditions.
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💡 These words have similar meanings to "Mucus" and can often be used interchangeably.
🔄 These words have opposite meanings to "Mucus" and show contrast in usage.
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Words that rhyme with "Mucus"
-cus sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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