The correct spelling of the phrase "most comer" is actually "most-come." This compound word means the person who comes the most often. The IPA phonetic transcription of this word would be /məʊst kʌm/. The "o" sound is pronounced as the "oh" in "go," while "u" is pronounced as "uh." The hyphen between the words indicates that they should be pronounced together without a pause. So, the next time you talk about the person who comes the most, remember to spell it as "most-come."