Moribund (adj):
[of a person] - near death
[of a thing] - in terminal decline

On that note, I might possibly bring up this:

Sweet Fanny Adams (idiom, slang): nothing, fuck all

callipygian

Having well shaped buttocks.

That's exactly what "Weird Al" Yankovic is teaching in "<span class="bold">Word Crimes</span>" :-)


<span class="bold">The meaning of the word <i>"Fuck"</i></span>




If you like to play with words...



Palindrome:

A word, a phrase or a text that reads the same backward or forward. <i>Demetri Martin</i> wrote a palindrome poem called "<span class="bold">Dammit I'm Mad</span>" containing 224 words.

Example: "Go hang a salami; I'm a lasagna hog!"



Pangram:

A sentence that uses every letter of the alphabet at least once.

Example: "The quick brown fox jumps over the lazy dog"



Heterogram:

A word or a sentence in which no letter of the alphabet occurs more than once.

Example: "The big dwarf only jumps"



Lipogram

A text in which a particular letter or group of letters is avoided, usually a common vowel. Ernest Vincent Wright wrote a novel called "Gadsby" consisting of 50,100 words, none of them containing the letter "E".



Pilish

A sentence in which the lengths of the consecutive words match the digits of the number π (pi).

Example: "How I need a drink, alcoholic in nature, after the heavy lectures involving quantum mechanics!"

(sorry, I know this is a bit off topic, but since Slaugh started it...)

My favourite ones are autograms. A sentence that describes its own composition.

Only the fool would take trouble to verify that his sentence was composed of ten a’s, three b’s, four c’s, four d’s, forty-six e’s, sixteen f’s, four g’s, thirteen h’s, fifteen i’s, two k’s, nine l’s, four m’s, twenty-five n’s, twenty-four o’s, five p’s, sixteen r’s, forty-one s’s, thirty-seven t’s, ten u’s, eight v’s, eight w’s, four x’s, eleven y’s, twenty-seven commas, twenty-three apostrophes, seven hyphens and, last but not least, a single !

I've got quite a large English vocabulary if I say so myself ( and I do ) but I have made a few mistakes since I started being fluent in English.

Here's one that I thought meant the spine for a very long time:

Spleen

babark beat ya to it :P

http://www.gog.com/forum/general/english_word_of_the_day/post70

Ostentatious (adj): pretentious; showy; designed to impress

borborygmus - noun (plural borborygmi)

A rumbling or gurgling noise made by the movement of fluid and gas in the intestines.

Plymouth - To relate an amusing story to someone without remembering that it was they who told it to you in the first place

LOL this thread just died :(

necromancy - the art or practice of supposedly conjuring up the dead, esp in order to obtain from them knowledge of the future

Nah, just took a break :-)

hugger-mugger - confusion, secrecy

But please, can you use it in a sentence? I'm having trouble with proper use of it :-)