What's up

Grammar usage guide and real-world examples

Common responses include "Not much", "Nothing", or describing what you're currently doing. You can also reciprocate the greeting by asking "what's up" back.

Generally, no. It's best to use more formal greetings like "Hello" or "Good morning/afternoon" in professional contexts.

Alternatives include "How's it going?", "What's new?", or "How are you doing?", depending on the context and your relationship with the person.

It's suitable in casual conversations with friends, family, or close colleagues. Avoid using it in formal settings, job interviews, or when addressing someone in a position of authority.