A deliberate act designed to scare, annoy, harm, or
kill someone, that is executed in a way that appears to be an accident and thus the person who committed the act ideally gets away with it.
An example:
Johnny really hates his wife. She's the worst
thing that ever happened to him. He wishes she could
die. But he doesn't want to go through the
divorce process. So Johnny waits for his wife to be at the top of the stairs, and when she is, he lifts her up and tosses her headfirst down the stairs. She passes away. Emergency services show up and she is pronounced dead. No one ever suspects Johnny murdered her, and even if they do, it's impossible to prove it. Johnny gets away with it and marries his mistress.
Because of these "faked accidents",
murder rates are higher than officially counted. Countless people get away with
murder and other crimes and they
walk among us, completely unsuspected. Drew Peterson, a cop from Illinois, is a great example. He got away with drowning his wife in a bathtub until her body was reexamined 5 years later.