This is the 13296th most frequent Russian word.
мошенника
Fraudster or swindler.
Here "мошенник" refers to a person committing fraud or deceitful activities.
Этот человек знаменит как опытный мошенник.
This person is famous as an experienced fraudster.
In this case, "мошенник" emphasizes the deceptive nature of the person.
Я не могу доверять ему, потому что он мошенник.
I cannot trust him because he is a swindler.
The word "мошенник" is used here to describe someone attempting to trick another individual in a transactional context.