Expensively luxurious can be described as 'PLUSH', which is a five letter word. It is an adjective used to describe something that is of the highest quality and extravagantly luxurious. It is often used to describe items that are expensive and luxurious, such as furniture, clothing, and other items. PLUSH can also be used to describe a luxurious lifestyle or environment, such as a PLUSH hotel or a PLUSH restaurant.