How do you pronounce "optimum"?

In American English: /ˈɑːptɪməm/ (AHPT-im-uhm). In British English: /ˈɒptɪməm/ (OPT-im-uhm). In Canadian English: /ˈɑːptɪməm/ (AHPT-im-uhm). In Australian English: /ˈɒptɪməm/ (OPT-im-uhm).

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

Yes. In American English it's pronounced /ˈɑːptɪməm/ (AHPT-im-uhm), while in British English it's /ˈɒptɪməm/ (OPT-im-uhm).

How to Pronounce "optimum"

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optimum

regional

/ˈɑːptɪməm/

AHPT-im-uhm

Syllable Breakdown

ɑːptop·ɪmti·əmmum

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14