How do you pronounce "unprecedented"?

In American English: /ənˈprɛsɪˌdɛntɪd/ (uhn-PREHS-i-dehnt-id). In British English: /ɐnpɹˈɛsɪdˌɛntɪd/ (ⱯNPR-ehs-id-ehnt). In Canadian English: /ənˈprɛsɪˌdɛntɪd/ (uhn-PREHS-i-dehnt-id). In Australian English: /ʌnpɹˈɛsɪdəntɪd/ (uhnpr-EHS-id-uhnt-id).

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

Yes. In American English it's pronounced /ənˈprɛsɪˌdɛntɪd/ (uhn-PREHS-i-dehnt-id), while in British English it's /ɐnpɹˈɛsɪdˌɛntɪd/ (ⱯNPR-ehs-id-ehnt).

How to Pronounce "unprecedented"

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unprecedented

regional

/ənˈprɛsɪˌdɛntɪd/

uhn-PREHS-i-dehnt-id

Syllable Breakdown

ənun·prɛspr·ɪece·dɛntdent·ɪded

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14