4 syllables: Il, lus, tri, ous. Stress on lus.
il-UHS-tree-uhs
/ˌɪˈlʌstɹiəs/
Illustrious is pronounced il-UHS-tree-uhs (/ˌɪˈlʌstɹiəs/). It has four syllables (Il-lus-tri-ous), with the stress on "lus". Illustrious (adj.) describes someone or something that is highly admired and well known for achievements or noble qualities; shining brightly in reputation. It conveys public distinction and notable status, often earned through notable deeds or fame. The term carries a formal, elevated tone and is commonly used in academic, literary, or ceremonial contexts.
adjectiveIllustrious (adj.) describes someone or something that is highly admired and well known for achievements or noble qualities; shining brightly in reputation. It conveys public distinction and notable status, often earned through notable deeds or fame. The term carries a formal, elevated tone and is commonly used in academic, literary, or ceremonial contexts.
How to Pronounce Illustrious
"Her illustrious career spans three decades of groundbreaking research."
"The city hosts an illustrious parade honoring its celebrated artists."
"She spoke with illustrious passion about the nation’s first explorers."
Break it as il-LUS-tri-ous, with primary stress on the second syllable. IPA US/UK/AU: /ɪˈlʌstriəs/ for all three. Start with a short, lax vowel /ɪ/ in the first syllable, then /ˈlʌs/, then /triəs/. The /ɪ/ at the start is quick, the /ˈlʌs/ is the peak, followed by /triəs/ where the /j/ is part of the /tr/ cluster before a light schwa. Practicing in isolation and in connected speech helps anchor the rhythm: il-LUS-tri-ous. Audio reference: you can compare pronunciations on Pronounce or Cambridge dictionary audio sample.
Common errors: (1) Stress misplacement, saying il-LU-stri-ous with primary stress on the first syllable. (2) Omission or weak pronunciation of the /l/ cluster in /lʌs/. (3) Slurring the /tri/ into /tr/ without a clear /i/ vowel, e.g., /ˌɪˈlustrəs/ or /ɪˈlustrəs/. Correction: stress the second syllable as /ˈlʌs/ and articulate the /tr/ with a distinct /iə/ or /iəs/ vowel sequence: /ɪˈlʌstriəs/. Practice by isolating /lʌs/ and then inserting /tri/ clearly before /əs/.
US/UK/AU share /ɪˈlʌstriəs/ in broad terms, with subtle differences: US tends to reduce the final /əs/ to /əs/ or /əs/ and keep a clear /ɪ/ at start; UK may feature a marginally longer /ɪ/ and crisper /t/ in /tri/; AU often has a slightly broader vowel quality in /ʌ/ and a lessened rhotic influence, but keeps the established rhythm and /ˈlʌstriəs/ stress pattern. All three use primary stress on the second syllable: il-LUS-tri-ous.
Two main challenges: (1) the /lʌs/ sequence with an intervening /s/ makes a rapid, light consonant cluster that can blur in fast speech. (2) The /tri/ onset in the third syllable requires a clean /t/ followed by a smooth /r/ and a tall /i/ transition into /əs/. Misplacing stress or blending /tri/ with nearby vowels muddles clarity. Focus on chunking il- LUS -tri-ous and practice with minimal pairs to sharpen the /l/ and /tr/ transitions.
A unique aspect is the unstressed, nearly schwa-like ending /əs/ after the /i/ in /triəs/. Many learners flatten the final syllable into /əs/ or omit the /i/ before it. Ensure the /i/ in /tri/ is distinct before the final /əs/: /ˈlʌstriəs/. Also keep the intrusive but light quality of /r/ in some accents if followed by vowel sounds in connected speech.
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Illustrious derives from Latin illustriōsus, formed from illustriō (to illuminate, to make bright) + -ōsus (full of, characterized by). The root illūstr- traces to illūstrāre (to make bright, to illuminate, to explain) from Latin; illūstris meant bright, shining, or distinguished. In Middle English, it entered through French as illustre or illustreux, adopting the sense of “illuminated” or “highly distinguished” by the 15th century. The word’s metaphorical use—shining in reputation—developed as societies valued notable achievement and public visibility. First known use in English dates to the early 16th century, with full standard meaning of “highly distinguished, celebrated” established by the 17th–18th centuries as literary and ceremonial registers expanded. Over time, illustrous qualities became associated with nobility, art, science, or leadership, reinforcing the sense of luminous fame rather than mere brightness.
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Words that rhyme with "Illustrious"
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