How Do You Spell ENLARGE UP ON?
Pronunciation: [ɛnlˈɑːd͡ʒ ˌʌp ˈɒn] (IPA) 
The phrase "enlarge up on" isn't a commonly used phrase, and there isn't a standard spelling for it. However, if we were to break it down phonetically, we might transcribe it as /ɪnˈlɑrdʒ ʌp ɒn/. This indicates that the first syllable is pronounced "in," followed by the stressed syllable pronounced with a long "a" sound, and then "j" and "p" sounds. The final word, "upon," is pronounced with a short "u" sound and a stressed "on" sound.
