How do you pronounce "cataclysm"?

In American English: /ˈkætəˌklɪsəm/ (KAT-uh-klis-uhm). In British English: /kˈætəklˌɪzəm/ (K-at-uhkl-iz). In Canadian English: /ˈkætəˌklɪsəm/ (KAT-uh-klis-uhm). In Australian English: /kˈatɐklˌɪzəm/ (K-at).

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

Yes. In American English it's pronounced /ˈkætəˌklɪsəm/ (KAT-uh-klis-uhm), while in British English it's /kˈætəklˌɪzəm/ (K-at-uhkl-iz).

How to Pronounce "cataclysm"

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cataclysm

regional

/ˈkætəˌklɪsəm/

KAT-uh-klis-uhm

Syllable Breakdown

kætcat·əa·klɪscl·əmysm

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14