simple past tense and past participle of clue

(colloquial) Informed.

(US, informal) Synonym of clued up (“knowledgeable about a topic or situation; possessing the facts”)

present participle of clue

(UK, healthcare) Initialism of consultant-led unit.

(computing) a computer language developed between 1974-1975 that used abstract data types.

(UK, informal) Knowledgeable about a topic or situation; possessing the facts.