The spelling of the word "haslem" is not common, and it can be confusing to know how to pronounce it correctly. The word "haslem" is spelled with a "silent S" in the middle, meaning that the S is not pronounced. The phonetic transcription of "haslem" is /ˈhæzləm/. Therefore, the correct pronunciation would be "hazz-luhm." This word is often used as a surname and is not frequently used in common language.