I keep going in loops, but psychopath seems to mean sociopath which means antisocial personality disorder.

Now I know that term only because that's what the therapist said about one of my relatives (not that I think they'd ever find me on here, but I'm not being specific for a reason).

This person lies to your face and makes other people believe his lies. He also has a disregard for the law and other people's feelings. Thinks if he gets away with something that's all that matters. He can't keep a job because he thinks the world owes him everything. He gets angry and sometimes violent when people confront him about his lies and other behaviors.

Have I pretty much got it? I mean, I couldn't find the definition, but I do know someone with it and this is my description of him.