How do you pronounce "supplementary"?

In American English: /ˌsəpləˈmɛntəˌriː/ (suhpl-uh-MEHNT-uh-ree). In British English: /sˌʌplɪmˈɛntəɹi/ (s-uhpl-IM-ehnt-uhr). In Canadian English: /ˌsəpləˈmɛntəˌriː/ (suhpl-uh-MEHNT-uh-ree). In Australian English: /sˌʌplɪmˈɛntəɹi/ (s-uhpl-IM-ehnt-uhr).

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

Yes. In American English it's pronounced /ˌsəpləˈmɛntəˌriː/ (suhpl-uh-MEHNT-uh-ree), while in British English it's /sˌʌplɪmˈɛntəɹi/ (s-uhpl-IM-ehnt-uhr).

How to Pronounce "supplementary"

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supplementary

regional

/ˌsəpləˈmɛntəˌriː/

suhpl-uh-MEHNT-uh-ree

Syllable Breakdown

səplsup·əple·mɛntmen·əta·riːry

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14