What is the meaning and origin of the word 'palooza'?

It is apparently derived from the word lollapalooza. From an entry about a music festival of that name: "The word - sometimes alternatively spelled and pronounced as lollapalootza or lalapaloosa - or "lallapaloosa" (P.G. Wodehouse - "Heart of a Goof") dates from a late 19th/early 20th century American idiomatic phrase meaning "an extraordinary or unusual thing, person, or event; an exceptional example or instance." In time the term also came to refer to a large lollipop. Farrell, searching for a name for his festival, liked the euphonious quality of the now antiquated term upon hearing it in a Three Stooges short film. Paying homage to the term's double meaning, a character in the festival's original logo holds one of the lollipops.

The word has also caused a slang suffix to appear in event-planning circles as well as in news and opinion shows that is used synonymously with other suffixes like "a-go-go", "o-rama", etc. The suffix "(a)palooza" is often used to imply (often in hyperbolic language) that an entire event or crowd was made over that term, e.g.: "Parks"-apalooza, "Gaff"-apalooza, etc."

https://en.wikipedia.org/wiki/Lollapalooza