How dull意思

"How dull" is an expression used to express boredom or lack of interest. It is often used to describe a situation, activity, or person as being uninteresting or lacking in excitement. For example, if you are at a party and the conversation is dry and unengaging, you might say, "How dull," to indicate that you find the party boring. Similarly, if you are reading a book and find the plot unexciting, you might say, "This book is so dull," to express your lack of interest in the story.