fu

The perfect stem of the verb "to be" in Latin-- Sum, esse, fui, futurum.

Latin teacher: What's the perfect stem of "sum"?
Student: FU!

by Ladey Casey September 12, 2004

FU

A term used in RTS games to describe a particular unit as "Fully Upgraded" , i.e. it has been upgraded to the maximum level.

Player: OMG he's attackin me with those Roxxorz FU jarls.....
what do i do?

Team mate: GG

by fACT10n September 14, 2008

fu

WWE Wrestler John Cena's finishing move.
See also 'Stfu'

"Look at that. Its the FU!"

by Ben Parker January 13, 2008

FU

A very shitty wrestling move. It is nothing more than a body slam.

The FU is a shitty finishing move.

by Yo Momma January 13, 2005

fu

fuck up - to make a mistake.
Mostly used as "fu'd" for fucked up

cyberBOY01: man, I just accidently quit my web browser and my game!
Sh4tup99: dude you fu'd

by the Maniac June 23, 2004

fu

short or slang for "fool"

"Dat fu ain't got shit on me!"

by Leah July 30, 2003

fu

shortened version of "fu manchu" , refering to a specific type of moustache that is gay.

that guy has a fu.

by jo jo February 21, 2003