People who pretend to be something they are not, especially to trick others.
Shammers are not good because they are not honest.
Examples:
The man is a shammers. He says he is a doctor, but he is not.
She is a shammers. She pretends to be a princess.
The shammers tries to sell fake watches.
The cat is a shammers. It pretends to be a lion.
He is the biggest shammers in the whole world!
The shammers is like a bad actor in a play.