How do you pronounce "diabolical"?

In American English: /ˌdaɪəˈbɑːlɪkəl/ (deye-uh-BAHL-ik-uhl). In British English: /dˌaɪəbˈɒlɪkəl/ (d-eye-UHB-ol-ik). In Canadian English: /ˌdaɪəˈbɑːlɪkəl/ (deye-uh-BAHL-ik-uhl). In Australian English: /dˌaɪəbˈɒlɪkəl/ (d-eye-UHB-ol-ik).

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

Yes. In American English it's pronounced /ˌdaɪəˈbɑːlɪkəl/ (deye-uh-BAHL-ik-uhl), while in British English it's /dˌaɪəbˈɒlɪkəl/ (d-eye-UHB-ol-ik).

How to Pronounce "diabolical"

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diabolical

regional

/ˌdaɪəˈbɑːlɪkəl/

deye-uh-BAHL-ik-uhl

Syllable Breakdown

daɪdi·əa·bɑːlbol·ɪki·əlcal

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14