Very.  Used alot in Scotland....and in one example I can think of in my dialect of American English: dead tired.
Tha' was dead brilliant!
by Amy January 17, 2004
 Get the deadmug.
Get the deadmug. by Tom December 31, 2003
 Get the not deadmug.
Get the not deadmug. by E11//*]***** April 17, 2006
 Get the deadmug.
Get the deadmug. used as a verb: To disassociate oneself with a person to the point that they are as if dead. This is usually done to a person whose actions are considered malicious.
"She's crazy! You already told her you didnt want to speak to her. You gotta dead her! Don't answer her phone calls and ignore any type of communication she may want to have with you."
by I.Casanova March 24, 2008
 Get the deadmug.
Get the deadmug. by gcghettoMADE August 25, 2003
 Get the deadmug.
Get the deadmug. by NickCarr June 9, 2009
 Get the Deadmug.
Get the Deadmug. 