either an interjection used when one disapproves of something, or a verb meaning approximately the same thing as the slang form of suck.

I couldn’t care less (but one must keep up appearances, right?)

The Glorious lack of success

1. Another word for "suck", most probably derived from the world of internet gaming.

2. To not achieve

A word that used to mean "not succeeding" and was used by normal, literate people.

But these days "fail" is mostly used on the internet by no-life teenage losers. (Sometimes even in real life)

They say phrases such as "this FAILS", "you FAIL at life" and "FAIL" and "EPIC FAIL".

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.

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.