Lavish/ˈlævɪʃ/ Definition 1 of 2Pro Tip 1/3Extravagance Refers to great excess, usually involving money or style in elaborate ways. Their house was adorned with lavish decorations. Pro Tip 2/3Not Always Positive Can imply wastefulness or lack of moderation, not just generosity or wealth. Critics argue the gala was a lavish and unnecessary display. Pro Tip 3/3Opulence Often associated with luxury and wealth, indicates high quality and pricey items. She wore lavish jewels to the premiere.