How do you pronounce "extraterrestrial"?

In American English: /ˌɛkstrətɝˈɛstriːəl/ (ehkstr-uht-ur-EHSTR-ee-uhl). In British English: /ˌɛkstɹətəɹˈɛstɹɪəl/ (ehkstr-uht-uhr-EHSTR-i-uhl). In Canadian English: /ˌɛkstrətɝˈɛstriːəl/ (ehkstr-uht-ur-EHSTR-ee-uhl). In Australian English: /ˌɛkstɹətəɹˈɛstɹɪəl/ (ehkstr-uht-uhr-EHSTR-i-uhl).

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

Yes. In American English it's pronounced /ˌɛkstrətɝˈɛstriːəl/ (ehkstr-uht-ur-EHSTR-ee-uhl), while in British English it's /ˌɛkstɹətəɹˈɛstɹɪəl/ (ehkstr-uht-uhr-EHSTR-i-uhl).

How to Pronounce "extraterrestrial"

extraterrestrial

regional

/ˌɛkstrətɝˈɛstriːəl/

ehkstr-uht-ur-EHSTR-ee-uhl

Syllable Breakdown

ɛkstrex·əttra·ɝter·ɛstrres·iːtri·əlal

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14