How do you pronounce "effectiveness"?

In American English: /ɪˈfɛktɪvnəs/ (i-FEHKT-ivn-uhs). In British English: /ɪfˈɛktɪvnɪs/ (if-EHKT-ivn-is). In Canadian English: /ɪˈfɛktɪvnəs/ (i-FEHKT-ivn-uhs). In Australian English: /ɪfˈɛktɪvnəs/ (if-EHKT-ivn-uhs).

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

Yes. In American English it's pronounced /ɪˈfɛktɪvnəs/ (i-FEHKT-ivn-uhs), while in British English it's /ɪfˈɛktɪvnɪs/ (if-EHKT-ivn-is).

How to Pronounce "effectiveness"

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effectiveness

regional

/ɪˈfɛktɪvnəs/

i-FEHKT-ivn-uhs

Syllable Breakdown

ɪef·fɛktfec·ɪvntive·əsness

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14