clue up

== English == === Verb === clue up (third-person singular simple present clues up, present participle cluing up or clueing up, simple past and past participle clued up) (intransitive) To become knowledgeable on a subject. (transitive, passive voice) To make knowledgeable on a subject. (nautical, transitive) Synonym of clew. ==== See also ==== clued up