Niggard/niggardly sounds like a really, really, awful choice for a word to describe someone cheap like Scrooge. It's not a slur it just sounds way too much like one. The use of the word is controversial despite the only connection the two words share is how they sound.
I wouldn't use the word around people though. Explaining how a word that sounds racist isn't racist makes you appear to be more racist. It isn't a slur but gets treated as if it was one.
I've started listening to a King of the Hill podcast at work. The guys talk about every episode for about an hour which is more time than the episode. With more than 259 episodes at about an hour a piece I've got quite a lot of a single podcast to listen to.
Once you put your A team of Podcasts together you won't get bored. Podcasts cover every topic under the sun. I can't find it anymore but Stone Cold Steve Austin did a full episode of his podcast detailing the fighting he did against a woodpecker at his ranch. Other times the podcast will have a really good theme song.
I swear I'm not a podcast shill. It's just the most accessible media through my watch. A well curated library of subscriptions gets me through the week.
https://youtu.be/Vf4RsmaYuNw
SaLmon in the fish tacos, Hank!