Merriam-Webster's Collegiate® Dictionary, 11th Edition
DAMN
I. verb (damned; damning)
Etymology: Middle English dampnen, from Anglo-French dampner, from Latin damnare, from damnum damage, loss, fine
Date: 13th century
transitive verb to condemn to a punishment or fate,
2. to condemn vigorously and often irascibly for some real or fancied fault or defect , to condemn as a failure by public criticism, to bring ruin on, to swear at ; curse , intransitive verb curse , swear ,
II. noun
Date: 1619
the utterance of the word damn as a curse, a minimum amount or degree (as of care or consideration) ; the least bit ,
III. adjective or adverb
Date: 1775
damned