[nosioptar]

I prefer the term "douchebag" for its inclusivity. People of all ages know you're calling the person an asshole. I've also noticed Mormons are less offended by "douchebag" than "asshole".

[tunesmith]

Too bad it's misogynistic. I'm not sure you already knew that. If I were rude enough to call you a name, I wonder what term I could use that would work either way!

[bezier-curve]

As a gay man, I disagree. I think it's a word that describes someone who doesn't consider others without realizing it.

[gausswho]

You could try scumbag, but you might not want to know what it originally meant.