Anxious and crack-up are synonyms for paranoid. Confident is the opposite of paranoid. We have given below a collection of synonyms for "paranoid".
What does it mean to be paranoid? And what do we know about paranoia? Paranoia is the feeling that you are being threatened in some way, as if people are watching you or acting against you, even though there is no evidence that this is true. This happens to a lot of people at some point or another. Even when you know your worries are not based on reality, they can be upsetting if they happen too often. For example, he always gets a little paranoid about the lion in the jungle. I had lost all my confidence and had become somewhat paranoid.