It's not an acronym or an abbreviation, but rather a name chosen for its sound and meaning.
Here's what we know about the meaning:
* "Woo" is often used in Korean to express excitement or approval.
* "Zi" is a common Korean syllable, and in this context, it likely adds a sense of playfulness and energy.
Therefore, the name "Woozi" captures the playful and energetic personality of the artist. It also conveys the idea of something exciting and joyful, which aligns with the image of Seventeen's music and performances.