They try to discredit your reality by undermining your feelings ("You are being paranoid and jealous, there is nothing going on between me and her.")
When you share the truth, they accused you of inventing or making stuff up ("Stop lying, you know that is not true.").
They insult you and make overt or covert jokes about how difficult it is for you to find your keys, such as "Of course you can't find your keys, you're the most disorganized person I've ever met."
They say you're "too sensitive," "hysterical," or "overly emotional" ("You're hysterical. Stop acting so irrationally.
They claim you are paranoid, delusional, or that you have been told that events that actually occurred did not occur ("You constantly have some insane hypothesis. You certainly wouldn't have kept that cash in your wallet.
They attempt to take advantage of you by reporting things that others have said about you but have not actually spoken ("You sister told me she thinks you are really irresponsible.")
They attempt to undermine your reputation or make you appear untrustworthy to others. (I'm very concerned about Jane. She is acting so poorly because she has been so emotional. If you plan on involving her in the family business, you might want to reconsider.