rinunculous 

This term is for when you need a glass ceiling on something ridiculous (not be be confused with the flower, ranunculus)

Oh my lord -- that was the best burrito I've ever eaten... It was so good, it was rinunculous.

rinunculous by jt74 October 15, 2009

ridonculous 

Functionally similar to the word "ridiculous," this word is often used in its place for extra emphasis.

There's a ridonculous amount of cheddar cheese stuck in the printer.

ridonculous by 755coop3 April 23, 2004

ridonculous 

(adjective) - ridiculous

Roald Dahl's BFG uses this word. This may be the origin of the word. First published in 1982.

Some of the other origins I've seen suggested are ridonculous.

ridonculous by doof0000 June 16, 2011

ridunculous

Something so ridiculous, it's ridunculous.

Heidi and Spencer are such a ridunculous couple.

ridunculous by Catheryne October 3, 2007

Ridonculous 

When ridiculous knows no bounds

"Check out the hunk of blue cheese he's got on that wing."

"That's ridonculous!"

Ridonculous by Todd Benson March 2, 2004

ridunkulous

An amazingly awesome fluke or mishappening that only occurs when something that has never happened before. An end result of a chain of outlandish events that lead up to an almost inconceivable out come. Can also be an inevitable failure turned into an sweet presentation of unknown skill. Accidental awesomenicity.

When you drop something but make an attempt to catch it and fail but hit it high enough to make another attempt and another and another and another until you finally grasp it and you look up and everybody cheers, and their only possible response is "That was ridunkulous"

ridunkulous by Mocha Bear December 24, 2009

ridunkulous

something that is extremely ridiculous

Susan failed all her classes this semester...that's ridunkulous.

ridunkulous by Amira B. December 28, 2005