That word is considered somewhat archaic.
Yes... the humor in that, though, is that busybody claims to be Jewish and the Jews are stereotyped in western culture as cheap and stingy. Conversely, many Americans think that niggardly has some connection to the word nigger (it doesn't; in fact, it is actually old English and goes back to the same root as to 'renege'). So the humor in it is two fold :-D
In America the word Nigger has really only one meaning and it is intended to be derogatory toward blacks. No other ethnic slur is so heated. For myself I do not get mad. I laugh about it. Words can never hurt me.
Seriously, though, the word nigger has become some sort of taboo, the biggest insult that can be laid at someone, and yet... why aren't terms like 'spic' or 'wog' or 'chink' or 'kyke' treated the same way? They are equally offensive and hurtful. Its a strange issue.
My own thought is that somewhere along the line it goes back to the unique relationships between blacks and whites in American history, as opposed to whites and blacks in other countries like Brazil, Cuba, Mexico, South Africa or western Europe.
My mother is white and my father is coal black. I'm a nice purdy milk chocolate. I inherited my moms white features but I inherited my dads big cock. All is well.
Good for you, but it doesn't help me much, now does it? I could have black blood or maybe not. Don't know... We traded all up and down the ocean, so who knows what I would find if I went back to all my ancestors over the centuries?