When someone says or does something extremely stupid that causes them to look like a huge newb, usually results in self inflicted pain and humiliation.

To lose, not pass or give up on doing something

A rather annoying word whose use in certain situations has greatly increased recently.

Kind of like the word "shit," "fail" is used by people who don't stop to think of a better word to use, making them pretty much useless to society.

"Fail" is a word that is more than often overused online. Unfortunately it has spewed into mainstream society and now is being used in every day life, much like "epic".

People who "fail" generally are not even trying to accomplish anything, or they simply do something different than you. This word is most commonly used by annoying teenagers (who put a bad reputation on gaming), who shout "FAIL!" every time someone makes a slight error.

If you point out an obvious flaw by saying "FAIL" you're obviously a failure yourself for having lack of logic.

UNF fleet from Navyfield. They are just so terrible.

To not succeed in a venture or activity. Various permutations of the phrase can be turned into almost any part of speech.

The real definiton of fail is Chris-Chan. His lack of sex life, a virgin with rage and real life friends make you want to cry. This is failure.