A scamster is a person who tricks other people to get their money or things.
Scamsters are not good people. They are sneaky and dishonest.
Examples:
The scamster took all my money.
Don't trust that scamster!
The scamster was caught by the police.
The scamster tried to sell me a broken toy.
The scamster stole all the candy from the store.
I don't want to be friends with a scamster.