I havent a clue

I havent a clue is the expression used when you dont understand something, havent got any advice or information for them, or you just arent sure about what they are asking. If you dont have a clue, you literally do not have any clues as to what the possible answer could be. This is in response to any type of query such as if you know where a certain person is, how to do something, or any idea of how something works.