To me
Evil is...
° the pursuit of things that are just cruel and dripping of ill will.
I find it astounding how the world "evil" sounds similar to "ill will" already.
It is basically being
° hostile
° contemptious
° antanogistic
without any provocation or logical reason, or any interest in the bigger picture of things.
Evil in itself is not acceptable. But an evil method that leads to a "good" outcome is acceptable, when no other option is available I think.
Choosing an evil path to achieve a certain outcome is something someone only does who has seen good & justice fail before.
^ Like the Paladin Anders who allied with Zariel for example. ^
And evil intentions based on the pursuit of "good will" are quasi halfway corrupted into something good already for me.
My Drow Mistress is evil. Because she holds ill will bound to a superiority complex without facing ill will herself.
If she is seeing the non-Drow "lesser Races" she does not care how much kindness they might show her.
For her, those humanoid races are simply inferior and their only redeemable quality is filling up the roles of slaves.
Even though more other Drow Women might show her more hostility and betrayal on the path.
There is nothing logical about her baseline beliefs and therefore she is evil.
And yeah I bind evil to being dumb and arrogant as well.
One more reason why I think the complete genocide of all Goblins is not evil, since they kinda deserve it and provoce myself into thinking so.
" Do good and you are worthy of being treated good. "
" Do evil and you are worthy of being treated evil. "
Hard to draw the line who is allowed to be the last evil of course. But sometimes, Evil can come with a good outcome in surprise.
I know all D/evils are supposed to be absolutely evil.
But are they really? Just because they want to be repaid from me for helping me?
Just because they want my soul, a thing I do not even have true control about?
If I reincarnate, this being "I" become is not "Me" anymore anyways. It will have a different personality and therefore have nothing more to do with me, right?
So who gives a sh**?
The low-class trash cannonfodder Devil my soul might become in the eternal bloodwar or whatever, it sounds like it won't be boring at least.
Sounds better to me as this "Kelemdor" Bastard, who might decide I get stuck in some kind of horrormovie wall
for all eternity just the same.

And sorry God or not who gave this worthless mofo that right.
He just took it for himself at some point, right?
Naaaaaah man, I wont bow in fear of the gods. And this dude is not a good. He is more Demonic and Devilish as all others. ^^
So doing what the stupid Fae'run universe might consider evil, sounds like a valid solution for certain stuff.
As usual... just try to not get caught by the stupid powerful entitys of the same world, thinking might makes right - which is also not truly a legitimate logic.