The proper spelling of "portville" is not straightforward. The word can be broken down into two parts, "port" and "ville," but the pronunciation of those two parts can still lead to confusion. The IPA phonetic transcription of "port" is /pɔrt/, while the IPA for "ville" is /vil/. Therefore, the correct spelling should be "Portville" with a capital P and a clear separation between the two parts. This ensures that the correct pronunciation of the word will be /pɔrtvɪl/ with emphasis on the first syllable.