The spelling of the word "sproul" is not very intuitive, as it has some unusual combinations of letters that can be confusing for non-native speakers. However, its pronunciation can be easily explained using the International Phonetic Alphabet (IPA). The word "sproul" is pronounced as /spɹaʊl/, with the "ou" sound representing a diphthong that combines the sounds of "ah" and "oo". This makes the word slightly elongated and emphasizes the "ow" sound at the end.