The spelling of the word "siegal" is somewhat unique and can be explained through the use of the IPA phonetic transcription. In this case, "sie" is pronounced as /si/ which is a common sound combination in English. The "g" at the end of the word is pronounced as /ɡ/ which denotes a hard "g" sound. Overall, the spelling of "siegal" follows common English sound patterns and can be broken down into phonetic components for easier pronunciation.