1. an elaborate and spectacular entertainment or production
2. an elaborate, expensive, or luxurious display or event

Examples

• The Broadway musical was a dazzling extravaganza with elaborate costumes and sets.
• The company’s holiday party was an extravaganza complete with live entertainment.
• The wedding reception turned into a three-day extravaganza.
• The circus extravaganza featured acrobats, animals, and fireworks.
• The shopping mall’s grand opening was a retail extravaganza.
• The film festival’s closing ceremony was a star-studded extravaganza.