How do you pronounce "illness"?

In American English: /ˈɪlnəs/ (ILN-uhs). In British English: /ˈɪlnɪs/ (ILN-is). In Canadian English: /ˈɪlnəs/ (ILN-uhs). In Australian English: /ˈɪlnəs/ (ILN-uhs).

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

Yes. In American English it's pronounced /ˈɪlnəs/ (ILN-uhs), while in British English it's /ˈɪlnɪs/ (ILN-is).

How to Pronounce "illness"

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illness

regional

/ˈɪlnəs/

ILN-uhs

Syllable Breakdown

ɪlnill·əsness

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14