aponymous 

1. A name given to a pony whose real name is not known.
2. A collective group of bronies over the Internet dedicated to eliminating zombies, trolls, hackers, terrorists and pedophiles, by uploading pictures of ponies to wherever they please.
3. Alternative spelling for anonymous.

We all believe in the true spirit of Aponymous, where the remainder of our race can finally come together and spread joy and happiness online, without the interference from Princess Celestia.

aponymous by Moshalas July 20, 2011

Acronymous Slang 

The shortening of common sayings by using the first letter of each word, and then presenting the letters in its abbreviated form. It is frequently used in the emails, the text messages, and/or references to the rockin' bands.

I can't wait to listen to the BTO (Bachman Turner Overdrive). The TCB (Takin' Care of Business) is one of my favorite songs of all the time. If you disagree, I will LOL, my friend. DYCTDOM? (Do you catch this drift of mine?) If not, my use of the acronymous slang might be confusing you. In that case, MAMF (My apologies, my fried).

Acronymous Slang by Roadside Jesus February 23, 2008

Antonymous 

A variation of the word antonym, in a manner similar to the way synonym and synonymous are related. When several words are synonyms, they mean approximately the same thing. However, when they are synonymous, they mean exactly the same thing. Similarly, there must be a word that means exactly opposite, to pair with "antonym" which only means approximately opposite. Thus, antonymous words are words that are exact polar opposites in meaning.

Black and white are antonymous.

Antonymous by Joe T. (From the mind of Katie W.) June 28, 2005

astronomous 

'dogs bollox', 'heavy' & 'jolly good old chap'(for the toffs) all rolled into one!

"it was an astronomous footy match"!!

astronomous by Ben February 15, 2004