How do you pronounce "thirty"?

In American English: /ˈθɝːˌdiː/ (THUR-dee). In British English: /θˈɜːti/ (TH-ɜt). In Canadian English: /ˈθɝːˌdiː/ (THUR-dee). In Australian English: /θˈɜːti/ (TH-ɜt).

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

Yes. In American English it's pronounced /ˈθɝːˌdiː/ (THUR-dee), while in British English it's /θˈɜːti/ (TH-ɜt).

How to Pronounce "thirty"

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thirty

regional

/ˈθɝːˌdiː/

THUR-dee

Syllable Breakdown

θɝːthir·diːty

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14