Definitions

1. noun

An informal greeting, often used to ask how someone is doing.

“What’s up, how are you doing today?”

2. verb

To inquire about someone’s well-being or situation.

“I was wondering what’s up with John, hasn’t he been answering my calls.”

3. interjection

Used to express excitement or interest in something.

“What’s up with that new movie trailer, it looks amazing!”