The word "blish" does not currently exist in English language and hence does not have a corresponding IPA phonetic transcription. It is important to note that the spelling of words in the English language is based on a set of rules and conventions that have evolved over time. These rules and conventions can vary depending on several factors, including the origin and etymology of the word. As such, it is always essential to consult a reliable dictionary or language resource when in doubt about the spelling of a particular word.