1. characterized by or displaying ostentatious wealth, luxury, or elegance; showy and expensive
Usage: formal or literary; often implies disapproval of excessive display

Examples

• The fastuous mansion featured marble columns and crystal chandeliers throughout.
• She arrived at the gala in a fastuous gown adorned with diamonds and pearls.
• The hotel's fastuous lobby impressed guests with its gilded ceilings and ornate furnishings.
• His fastuous lifestyle included private jets and exclusive resort properties.
• The fastuous decor of the ballroom reflected the family's considerable wealth.