How do you pronounce "thesis"?

In American English: /ˈθiːˌsɪs/ (THEE-sis). In British English: /θˈiːsɪs/ (TH-ees). In Canadian English: /ˈθiːˌsɪs/ (THEE-sis). In Australian English: /θˈiːsɪs/ (TH-ees).

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

Yes. In American English it's pronounced /ˈθiːˌsɪs/ (THEE-sis), while in British English it's /θˈiːsɪs/ (TH-ees).

How to Pronounce "thesis"

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thesis

/ˈθiːˌsɪs/

THEE-sis

Syllable Breakdown

θiːthe·sɪssis

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14