How do you pronounce "unfathomable"?

In American English: /ənˈfæðəməbəl/ (uhn-FATH-uhm-uhb-uhl). In British English: /ʌnfˈaðəməbəl/ (uhnf-ATH-uhm-uhb). In Canadian English: /ənˈfæðəməbəl/ (uhn-FATH-uhm-uhb-uhl). In Australian English: /ʌnfˈaðəməbəl/ (uhnf-ATH-uhm-uhb).

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

Yes. In American English it's pronounced /ənˈfæðəməbəl/ (uhn-FATH-uhm-uhb-uhl), while in British English it's /ʌnfˈaðəməbəl/ (uhnf-ATH-uhm-uhb).

How to Pronounce "unfathomable"

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unfathomable

regional

/ənˈfæðəməbəl/

uhn-FATH-uhm-uhb-uhl

Syllable Breakdown

ənun·fæðfa·əmth·əboma·əlble

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14