1. something or someone that is remarkably impressive or outstanding; an extraordinary person or thing
Usage: informal; often used in positive contexts
2. a large, elaborate, or spectacular event or celebration
Usage: informal

Examples

• That concert was a real lollapalooza—the best show I've ever seen.
• She's a lollapalooza of a teacher; her students love her classes.
• The company threw a lollapalooza of a party for the company anniversary.
• His performance in the play was a lollapalooza.
• The festival turned out to be quite a lollapalooza with live music, food trucks, and fireworks.
• That new restaurant is a lollapalooza—everyone's talking about it.