1) The opposite of "benefit of the doubt,"
Instead of someone assuming you have
the best intentions and are a good person, or that you meant well, they instead assume the opposite; that is to say, they assume you meant them
harm, you have bad intentions, are a bad person, and so on.
2) The lack of offering the benefit of the doubt.
3) assuming someone is guilty before proven
innocent, instead of the other way around.
Ashley gave Johnny the detriment of the doubt when she assumed that he was an
obsessed jerk rather than thinking that there was a misunderstanding on both sides due to both of their actions, which led him to believe he had hurt her and that she was better off without him, and led her to believe that he was showing his true colors after several years of good friendship. They were both
wrong, and lost their friendship due to not communicating.