They’re Full Of Hate
Many times, malevolent people are those who are filled with hate. These are the type of people that are homophobic, bigots, racist and bash other people’s beliefs. And worst of all, they don’t even think that what they are doing or what they are saying is wrong.
They’re Unreliable
Just like how foul folks couldn’t care less about your time, they also tend to be very unreliable. While you can’t change plans or upset them in any way, they are completely unreliable and tend to flake on you over and over again, without any thought to your time or feelings.