How do you pronounce "infectious"?

In American English: /ˌɪnˈfɛkʃəs/ (in-FEHKSH-uhs). In British English: /ɪnfˈɛkʃəs/ (inf-EHKSH-uhs). In Canadian English: /ˌɪnˈfɛkʃəs/ (in-FEHKSH-uhs). In Australian English: /ɪnfˈɛkʃəs/ (inf-EHKSH-uhs).

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

Yes. In American English it's pronounced /ˌɪnˈfɛkʃəs/ (in-FEHKSH-uhs), while in British English it's /ɪnfˈɛkʃəs/ (inf-EHKSH-uhs).

How to Pronounce "infectious"

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infectious

/ˌɪnˈfɛkʃəs/

in-FEHKSH-uhs

Syllable Breakdown

ɪnin·fɛkʃfec·əstious

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14