Apparently, there is no standard spelling of the word "fosler". However, one might assume that it is pronounced /ˈfɒslər/ based on the IPA phonetic transcription. The sound represented by "f" is a voiceless labiodental fricative, followed by the vowel sound "o" as in "hot". The "s" provides another fricative sound (voiced alveolar), while the "l" is an alveolar lateral approximant. The final "er" sounds like the end of "butter", making the pronunciation of "fosler" /ˈfɒslər/.