The word "mutabl" is actually misspelled; the correct spelling is "mutable". The IPA phonetic transcription for "mutable" is /ˈmjutəbəl/. The "m" sound is followed by the "y" sound to create the "mju" sound. The "t" sound is represented by the "t" letter, while the schwa sound "ə" is used for the "a" sound. Lastly, "ble" is pronounced as "bəl". It is important to use correct spelling and pronunciation to avoid confusion and improve communication.