Insecure can be defined by many things. For one, if someone has to constantly repeat how great or attractive they think they are, clearly they're not entirly sure about it. They might be trying to convince themselves it's true. 2nd, they lie. A lot. This is because they're too ashamed of their own lives to except them for what they REALLY are, so they make up people and situations in order for their lives to sound a little more exciting. 3rd, they're easy. As in, they would go to third base on a first date. They need either a lot of guys or girls approval in order to be confident with their appearence, love life, exct. And lastly, they put other people down. They'll make an unecessary, rude comment and try to pass it of as a joke. Call them out on it and they'll say that they really don't care. But if they're even taking the time to respond, then they obviously do.

Someone who insults others to hide their own weaknesses.

A flawed character/personality trait that makes a man (usually), who is not happy with himself, lie about his pathetic life to cover his failures. He will invent people, situations or things to boost his image. He will reiterate his numerous successes to look superior. If he has a girlfriend he will disrespectfully read her diary, monitor her conversations or spy on her to see if she is cheating. If he is in public with his woman, he gets jealous when a guy looks at her (which is actually a compliment) because he is threatened by another man and knows deep down that he isnt worthy of her. He feels as though his sense of self-worth (or lack of it) is found in the woman in his life because he must have a woman and sex to be happy. He will also talk bad about others to make himself feel better.

Insecure is a guy who lies a lot and dosent have much to do with his time. He will lie and make it look like he works or has a good job when he lives with his mother and can't pay for anything. He's usually in his 30's and is very unsuccessful and unambitious. He will not have a car of his own, a house or a girlfriend. Nothing that normal people have. He fills his time trying to make peoples lives miserable because he is miserable inside and a failure at everything he does. Most likely he is unnatractive and may have some other condition such as problems interacting with people so he has a hard time socializing.

When a guy loses his hair or has many imperfections he tends to be insecure.