Palaceous is derived from the Latin term "palaceus," meaning of or about a palace. It is an adjective that describes something relating to a palace. Synonyms for palaceous include opulent, luxurious, splendid, grandiose, magnificent, and sumptuous. Each of these words captures the regal, majestic, and extravagant connotations associated with palaces. These terms can be used to describe anything that elicits the same sense of lavishness and opulence, such as extravagant mansions, ornate furniture, and grand ballrooms. Using palaceous synonyms in writing can help to capture the essence of anything that exudes a luxurious and elegant vibe.