Home › Words › L › lollapaloozalollapalooza/ˌlɑləpəˈluzə/lollapalooza · noun — an outstanding, extreme, or outrageous example of its kind.Definition from Wiktionary (CC BY-SA 3.0).lollapalooza is pronounced /ˌlɑləpəˈluzə/.EtymologyUnknown. Compare lollypaloozer and lallapalootza, which are attested earlier with similar meaning. Compare also 19th century slang la-la something unusually good.nounAn outstanding, extreme, or outrageous example of its kind.Definitions & examples from Wiktionary (CC BY-SA 3.0).