The spelling of the word "Fisler" can be explained using IPA phonetic transcription. The first sound is represented by /f/, which is pronounced as a voiceless labiodental fricative. This is followed by the vowel sound /ɪ/, which is pronounced as a short "i" sound. The next consonant sound is /s/, which is pronounced as a voiceless alveolar sibilant. The final sound is /l/, which is pronounced as a voiced alveolar lateral. So, "Fisler" is written phonetically as /ˈfɪslər/.