psychopathic

Superficially charming, psychopaths make a good first impression on others and will often strike observers as remarkably normal. Yet they are dishonest, self-centered, and unreliable, and at times they engage in irresponsible behavior for no apparent reason other than the sheer fun of it. Largely devoid of guilt, they have casual and callous interpersonal and romantic relationships. Psychopaths often offer excuses or make up elaborate lies for their reckless and often outrageous actions, placing blame on others instead. They almost never learn from their mistakes, plan for the future or realize the reprocussions of their actions, and they have difficulty inhibiting their impulses.