damn |dam|

verb [ trans. ]
(in Christian belief) (of God) condemn (a person) to suffer eternal punishment in hell : be forever damned with Lucifer.
• ( be damned) be doomed to misfortune or failure : the enterprise was damned.
• condemn, esp. by the public expression of disapproval : intellectuals whom he damns as rigid doctrinaire idealists.
• curse (someone or something) : she cleared her throat, damning it for its huskiness | damn him for making this sound trivial.

exclamation informal
expressing anger, surprise, or frustration : Damn! I completely forgot!

adjective [ attrib. ] informal
used for emphasis, esp. to express anger or frustration : turn that damn thing off! | [as submodifier ] don't be so damn silly!

PHRASES
—— be damned used to express rejection of someone or something previously mentioned : “Glory be damned!”
damn all Brit., informal nothing at all.
damn well informal used to emphasize a statement, esp. when the speaker is angry : this is your mess and you can damn well clear it up!
damn someone/something with faint praise praise someone or something so unenthusiastically as to imply condemnation.
I'll be (or I'm) damned if informal used to express a strong negative : I'll be damned if I'll call her.
not be worth a damn informal have no value or validity at all.
not give a damn see give .
well I'll be (or I'm) damned informal used as an expression of surprise.


ORIGIN
Middle English : from Old French dam(p)ner, from Latin dam(p)nare ‘inflict loss on,’ from damnum ‘loss, damage.’