not have a clue

== English == === Verb === not have a clue (colloquial) To have no knowledge about a topic or situation. (colloquial) To be completely unable to understand or deal with something. ==== Synonyms ==== not have the foggiest, not have the faintest idea ==== Related terms ==== have a clue === References === “not have a clue”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present. “don’t have a clue”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.