2 syllables: one, third. Stress on one.
WUHN-thurd
/ˈwʌnˌθɝd/
onethird is pronounced WUHN-thurd (/ˈwʌnˌθɝd/). It has two syllables (one-third), with the stress on "one". Onethird is the fraction represented by one divided by three, or 1/3. It is pronounced as a single compound word, typically transitioning smoothly from /ˈwʌnˌθɜːrd/ in American and British varieties, though accents may fuse the /n/ and /θ/ sounds differently. This term is used in mathematics, statistics, and everyday measurement contexts, often appearing with numerals, decimals, or percent expressions.
Onethird is the fraction represented by one divided by three, or 1/3. It is pronounced as a single compound word, typically transitioning smoothly from /ˈwʌnˌθɜːrd/ in American and British varieties, though accents may fuse the /n/ and /θ/ sounds differently. This term is used in mathematics, statistics, and everyday measurement contexts, often appearing with numerals, decimals, or percent expressions.
Correction tips: - Tap the tongue lightly against the upper teeth to generate a crisp /θ/; avoid lips-only /f/ or alveolar touches. - Keep the /ɜː/ or /ɜːr/ nucleus stable and avoid vowel reduction; use a mid-back tongue position and rounded lips if appropriate to your accent. - End with an audible /r/ if your dialect is rhotic, or practice non-rhotic realization by letting the /r/ be less pronounced but clear the /d/ sound before the final consonant cluster.
"The recipe calls for one third cup of sugar."
"If you split the bill, each person pays one third of the total."
"One third of the students completed the survey."
Pronounce it as a two-syllable compound: /ˈwʌnˌθɜːrd/. Stress is primary on the first syllable for the compound with a secondary rise in tone on the second syllable; the /θ/ is the voiceless interdental fricative, followed by /ɜːr/ in US/UK pronunciations. Listen to [Pronounce] or Forvo for a native reference. Ensure the /n/ links smoothly into /θ/, avoiding an audible gap between sounds.
Common mistakes: mispronouncing the initial /w/ as /v/ (want-oneinstead), and blending the /θ/ with a /t/ or /d/ so it sounds like /dɜːrd/. Another error is reducing /θɜː/ to /tɜː/ or /fɜː/ in fast speech. Corrections: clearly articulates /θ/ with the tongue behind the upper front teeth, keep the /ɜː/ as a mid-central vowel with r-coloring, and maintain the /rd/ cluster without replacing with /d/ or /t/.
US: /ˈwʌnˌθɜːrd/ with rhotic /ɜːr/; UK: /ˈwʌnˈθɜːd/ or /ˈwʌnˌθɜːd/ and often non-rhotic /r/ after a vowel in some dialects; AU: /ˈwɒnˌθɜːd/ with slight vowel shifts and similar /θ/; note rhoticity and vowel quality shifts influence the exact vowel duration and lip rounding. Practice listening to regional variations to capture subtle vowel length and /r/ rhoticity differences.
It's challenging due to the /θ/ interdental fricative, which is rare in many languages and can elide into /f/ or /t/. The /n/ before /θ/ must smoothly connect, avoiding a nasal-t-tooth collision. Final /rd/ cluster can be tricky when moving quickly, causing vowel length variation and linking issues. Focus on precise tongue placement, slow practice, and then rhythm to fix flow.
The word uses a stressed primary syllable on 'one' with a secondary emphasis on 'third' in many contexts; the 'th' assimilates with a subsequent vowel or consonant, and in rapid speech, the /θ/ can polarize into a almost-dental stop in some speakers. A practical checker: slow, deliberate pronunciation in isolation, then gently increase speed while maintaining the dental fricative quality.
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- US: Maintain a clearly rhotic /ɜːr/; ensure the /r/ is pronounced with the tip of the tongue curled slightly toward the alveolar ridge; the /θ/ should be voiceless and produced with air through the teeth. - UK: Often non-rhotic; the /r/ in /ɜː/ is weaker, so focus on the dental /θ/ and the ensuing /d/ or /rd/ cluster; the /ɜː/ tends to be longer. - AU: Similar to UK with a slightly brighter vowel quality; the /θ/ remains delicate but easier to maintain in connected speech due to broader vowel shifts. IPA references: US /ˈwʌnˌθɜːrd/, UK /ˈwʌnˈθɜːd/, AU /ˈwɒnˌθɜːd/.
The term one third comes from Old English ān þridda, with ān meaning ‘one’ and þridda meaning ‘third’/‘third part’. The modern form collapses into onethird in Early Modern English, with the hyphen removed as standard compounds became closed forms. The word third itself descends from Proto-Germanic then Proto-Indo-European roots connected to ordinal numerals; it entered English well before the 12th century, used in legal and mathematical contexts. Over time, it specialized in fractions, coexisting with phrases like one half, two thirds, and one quarter. The pronunciation shifted in various English dialects—most notably the initial oɪ/ʌ in older forms—before standardizing to the modern /ˈwʌnˌθɜːrd/ or /ˈwʌnˌðɜːrd/ in many dialects. The compound form hardened in the 17th–19th centuries as numerals joined with fraction denominators, but regional variances in the /θ/ vs /ð/ realization and the final /rd/ cluster linger in some accents, preserving a degree of phonetic diversity across English-speaking regions.
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Words that rhyme with "onethird"
-ird sounds
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