"Reflueus" is a rare, archaic word referring to something that flows back. The IPA phonetic transcription of this word is /ɹiːˈfluː.i.əs/. The first syllable is spelled as "ref" which is pronounced as /ɹɛf/. The next syllable "lu" sounds like /lu/ and the third syllable "eus" is pronounced as /i.əs/. The spelling of this word can be challenging as it doesn't follow the usual English spelling rules. However, knowing the IPA transcription can help determine the correct pronunciation.