dead serious


dead serious

Completely serious, and not joking in any way. This phrase is usually used to implore the listener to believe the speaker. I'm dead serious—stop playing tricks on me!See also: dead, serious

dead serious

absolutely serious; not joking. Tom: You're funning me. Bill: No, I'm dead serious. Mary has threatened divorce a hundred times, but this time she says she's dead serious.See also: dead, serious