The proper spelling of the phrase "am prodigal with" is as it appears. The IPA phonetic transcription for this would be /æm ˈprɒdɪɡəl wɪð/ , with the stress falling on the first syllable of "prodigal". This phrase means one is wasteful or extravagant with something, often money or resources. It is important to spell correctly to ensure clear communication and understanding in written and spoken language.