The word "castle" in English is typically pronounced as /ˈkɑː.səl/ in British English and /ˈkæs.əl/ in American English. This breaks down to:
- British English: "kas-uhl" (with a longer "ah" sound as in "father")
- American English: "kas-uhl" (with a short "a" sound as in "hat")
The "t" in "castle" is usually silent in both pronunciations.