Ridicurous 

How DONNA CHENGstein mispronounced 'ridiculous' on the greatest sitcom ever, Seinfeld. It wasn't Elaine and you should be ashamed of yourself for thinking so.

Donna: This is really getting ridicurous!
Jerry: ..........Did you say 'ridicurous'?
Donna: Ridiculous!
jerry: I thought you said... 'ridicurous'...

Ridicurous by SoCrispy March 6, 2009

Riddikulus 

The Boggart-Banishing Spell is a charm that is used in defence against a Boggart. It causes the creature to assume a form that is humorous to the caster, along with a whip-crack noise, thereby counteracting the Boggart's ability to terrorise.
The caster must think of something funny while casting this spell. As boggarts feed on fear and are defeated by laughter, the object of the spell, ultimately is to make the boggart laughable.

Thanks to the riddikulus charm one can laugh at their worst fears.

Riddikulus by kaosmoker September 30, 2018

rediculous

The alarmingly common misspelling of ridiculous.

Joe: This game is rediculous!

Bob: Your spelling is ridiculous.

rediculous by Dassh July 25, 2004

forking ridiculous 

The increasing number of cryptocurrency forks where an existing cryptocurrency code is splits in two resulting in a newer and older version.

Hey, did you hear that another bitcoin fork is coming? Yeah, it's getting forking ridiculous.

forking ridiculous by Uncle Buck, Tennessee June 2, 2018

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