How do you pronounce "synthesis"?

In American English: /ˈsɪnθəsəs/ (SINTH-uhs-uhs). In British English: /sˈɪnθɪsɪs/ (S-inth-is). In Canadian English: /ˈsɪnθəsəs/ (SINTH-uhs-uhs). In Australian English: /sˈɪnθəsˌɪs/ (S-inth-uhs).

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

Yes. In American English it's pronounced /ˈsɪnθəsəs/ (SINTH-uhs-uhs), while in British English it's /sˈɪnθɪsɪs/ (S-inth-is).

How to Pronounce "synthesis"

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synthesis

regional

/ˈsɪnθəsəs/

SINTH-uhs-uhs

Syllable Breakdown

sɪnθsyn·əsthe·əssis

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14