How do you pronounce "sustain"?

In American English: /səˈsteɪn/ (suh-STAYN). In British English: /səstˈeɪn/ (suhst-AYN). In Canadian English: /səˈsteɪn/ (suh-STAYN). In Australian English: /səstˈeɪn/ (suhst-AYN).

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

Yes. In American English it's pronounced /səˈsteɪn/ (suh-STAYN), while in British English it's /səstˈeɪn/ (suhst-AYN).

How to Pronounce "sustain"

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sustain

/səˈsteɪn/

suh-STAYN

Syllable Breakdown

səsus·steɪntain

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14