The spelling of the phrase "ardent urine" is quite straightforward when viewed through the lens of phonetic transcription. In the International Phonetic Alphabet (IPA), "ardent" would be spelled /ˈɑrdənt/ and "urine" would be spelled /ˈjʊrin/. Taken together, the phrase would be pronounced as "AR-dent YUR-een." While this may seem like a strange phrase, it simply means very strong or fervent urine, and is used to describe the potent smell of certain bodily fluids.