As detailed above, 'damn' can be an adjective, a verb, an adverb, a noun or an interjection. Adjective usage: Shut the damn door! Verb usage: The official position is that anyone who does this will be damned for all eternity. ... Noun usage: I don't give a damn.

Is Dam a noun or adjective?

dam (noun) dam (verb) dam (noun) Grand Coulee Dam (proper noun)

Is Damn it a swear word?

This is because Damn is considered a swear word in English, for historical and religious reasons (as SamBC mentioned earlier). When you want to say a swear word, but don't want to be offensive, people create "Minced Oaths".