What a pretty意思

"What a pretty" is not a standard English phrase, but it could be interpreted as a colloquial or non-standard way of expressing admiration or appreciation for something that is considered attractive, pleasing, or nice. If we assume it's meant as a complete thought, it would be similar to saying "That's so pretty" or "It's very pretty."

Here are a few examples of how it could be used in context:

1. "What a pretty dress you're wearing!"
2. "What a pretty view from up here."
3. "What a pretty idea for a garden."

In each case, "pretty" is an adjective that means "pleasing to the eye or mind; attractive." It's often used to describe something that is aesthetically pleasing, such as a person, a view, a piece of art, or an object.