The term 'spacious and splendid' can be summarized by two crossword solutions: PALATIAL (8 letters) and patial (6 letters). PALATIAL is an adjective that describes something as being grand or majestic, often referring to a palace or other large, luxurious building. Patial is an adjective that means having a wide or open space, usually referring to a room or area. Both words are used to describe something that is large and luxurious, making them perfect solutions for the term 'spacious and splendid'.