Top Definition
A figment of your imagination.

Similar to dreams, but explains something terrible.
Oh no, I had a nightmare that I would fail my math test!
by Nightmare February 28, 2005
Siegfried Schtauffen from the Soul Edge/Calibur series after gripping the cursed hilt of Soul Edge. As Siegfried, carries a massive Zweihander named Faust, or another named Requiem. Probably the best character in the SE/C series. Appears in full platemail armor in SE, without helm in SC/SCII, or as Nightmare, in full plate with his right arm exposed, looking as though it were torn off of a demon and surgically placed over his own arm.
"I will show you...the GREATEST nightmare!"
by Nightmare April 16, 2004
the life you live, the world you are in, all is a nightmare, untill you wake, and find yourself in a dreamland,
nightmares are not a dream but the life you live
by lisayak December 29, 2004
Any situation that escalates to a level that is almost beyond comprehension against one's favor. Normally, inserted after a ridiculous story/description. If, by chance, an explitive is used as an adjective prior, it can be a way to measure the severity of the incident.
"Last night when I was out downtown everything went wrong: I lost my wallet, a guy beat me up, a homeless guy peed on me, and then some chick blue balled me... Fucking Nightmare"

"I am not a White Protestant in America... Nightmare"

"Wow I am out of beer...What a Nightmare"
by S. Poo September 26, 2006
1a. a dream composed that causes or suggests fear in the dreamer.
1b. an extremely distressing experience that should only have been a dream, but was actually real.
2. a (quite ugly and scary-looking, and hence aptly named) gravity-controlling creature in Metroid Fusion. its defeat yields the Gravity Suit.
3. a music track from the Castlevania series. it first stars as the background music for Alucard's caves in Castlevania 3, and is later remixed and reused in the Underground Waterway area of Castlevania: Circle of the Moon.
4. another music track from the Castlevania series. this one is distinctly different, and only shares the name with the other track. this one appears in Castlevania: Lament of Innocence.
1. "That dream...was a nightmare."
2. The plots of some SVU episodes might be nightmares if they happened in real life.
3. "Nightmare" is one of the musically strangest tracks. It differs in style significantly from its brethren in both of the games where it appears.
4. LoI's "Nightmare" is in B minor.
by Quint Sakugarne January 06, 2007
Ann Coulter becoming president.
"It's my opinion women shouldn't vote"
"Apartheid in South Africa was justified, they were surrounded by savages."
-Ann Coulter"
Ann Coulter being president would be a nightmare.
by Tim Brawner October 31, 2007
1. A bad dream
2. A french metal band
3. A AWESOME Japanese visual kei band
"Omfg, I had the scariest nightmare!"

"LOLZ Nightmare is pretty good!

"Have you heard Nightmare's newest single?"
by Rurululu July 15, 2008
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