haven't a clue

== English == === Verb === have a clue (third-person singular simple present has a clue, present participle having a clue, simple past and past participle had a clue) (colloquial) To be knowledgeable about a topic or situation. ==== Usage notes ==== As a negative polarity item, it is chiefly used in the negative as not have a clue. === See also === clueful clueless