The word "enlarges up on" may be a bit confusing to spell at first glance, but it is relatively straightforward when broken down phonetically. The pronunciation is /ɪnˈlɑrdʒɪz ʌp ɒn/, with the stress falling on the first syllable of "enlarges". The word "up" is pronounced with a neutral vowel sound, like "uh", and "on" rhymes with "gone". Overall, this phrase means "expands upon" or "adds to", and can be used to describe building upon an existing idea or concept.