look up any word, like b4nny:
 
15.
Instead of saying "Rediculous" sounds better when said out loud. (Re-Donk-U-Louss)
Mainly used to either sound like an idiot, or just sound like you know bigger words.
i,e:

Ariyth The Pony- You're so REDONKULOUS!
Donkey- ._.

Annoyed Teenage Girl- Ugh mom, you're so redonkulous!
Mom- Can't you say 'rediculous'?
Annoyed Teenage Girl- Pfft, mom. No one says the real words anymore! >:l
by O:HolyCrabapple:l May 22, 2010
 
22.
Redonkulous (adj.) - 1. Extremely Stupid; Rediculous to an almost impossible extreme
2.(Verb) Making an ass out of one's self
Antonyms:Dis-redonkulous, Believable, Rational, Acceptable, Tame, Lame
1.It was the most redonkulous thing ever! The Gnomes walked off and started shooting people.
2.He was acting redonkulously.
by Killerlamb April 26, 2004
 
23.
ridiculous times 10, great, adsurd, out of control, sickest ever
Spring break in cancun was redonkulous
by Phil Strong January 10, 2004
 
24.
adj. even more absurd than rediculous, but aslo bizzare and silly.
The fact that you would try to trade mp3's with Barley is just redonkulous.
by Anonymous April 04, 2003
 
25.
1. similar to "rediculous" but used to describe a party filled with "donkeys." A donkey is a woman who is rather easy or ugly or both.

2. or, to describe how much of a donkey a girl was or is.
1. That party last night was redonkulous!

2. Dude, the girls last night were so redonkulous.. can u believe she did that??
by recs April 19, 2011
 
26.
Slang, Modifier: A word or phrase that when spoken is so ridiculous it makes the speaker sound retarded or ignorant.
What you just said is totally redonkulous!
by Kelebrinlith March 22, 2010
 
27.
Something largely ridiculous, or largely fresh.
"That ride is fuckin redonkulous"

"Janine's purse is super fuckin redonkulous."

"Yo this weed is redonnnnkuloussss sonnnnn....."
by KidRhythm January 11, 2010
 
28.
extremely ridiculous, almost to the point of disbelief or absurdity; originated in the Bay Area of Northern California with a group of friends from Miramonte High School in the mid-90s; popularized by the creators of the Thursday Night Sports Party www.thursdaynightsportsparty.com.
That slam dunk he made from half-court while wearing a blindfold was redonkulous.
by TaytaT November 14, 2009