Select the most appropriate meaning of the given idiom.

Turn up one's nose at

To regard with contempt

The most appropriate meaning of the idiom "turn up one's nose at" is to regard with contempt. It means to look down on something or someone with a feeling of dislike or disgust. For example, you might say "He turned up his nose at the cheap food."

The other options are incorrect. "To spend carelessly" means to spend money without thought or care. "To walk away" means to leave a place or situation. "To like very much" is the opposite of what the idiom "turn up one's nose at" means.