Hidden asset is a term used to describe an asset that is not visible or easily accessible. The term can be broken down into three crossword solutions: TROVE (5 letters), HOLECARD (8 letters), and ACEUPONESSLEEVE (15 letters). TROVE refers to a hidden store of valuable items, while HOLECARD is a card in a game that is kept hidden from the other players. ACEUPONESSLEEVE is a phrase that means to keep something hidden up one's sleeve. All three terms together refer to a hidden asset, which is an asset that is not easily accessible or visible.