The word "extance" might seem unusual, but it is actually a variant spelling of "existence." In IPA phonetic transcription, it is spelled /ɪɡˈzɪstəns/, with the stress on the second syllable. This variation in spelling can be attributed to regional dialects or personal preferences, but it is not commonly used in standard English. It is important to note that using non-standard spellings can lead to confusion and misunderstandings, especially in written communication.