How do you pronounce "thirtieth"?

In American English: /ˈθɝːtiːˌɛθ/ (THURT-ee-ehth). In British English: /θˈɜːtiɪθ/ (TH-ɜt-ee). In Canadian English: /ˈθɝːtiːˌɛθ/ (THURT-ee-ehth). In Australian English: /θˈɜːtiəθ/ (TH-ɜt-ee).

Is "thirtieth" pronounced differently in American and British English?

Yes. In American English it's pronounced /ˈθɝːtiːˌɛθ/ (THURT-ee-ehth), while in British English it's /θˈɜːtiɪθ/ (TH-ɜt-ee).

How to Pronounce "thirtieth"

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thirtieth

regional

/ˈθɝːtiːˌɛθ/

THURT-ee-ehth

Syllable Breakdown

θɝːtthir·iːti·ɛθeth

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14