This is the 13354th most frequent Polish word.
oszustem
"Impostor" or "swindler."
Here, 'oszusta' is in the accusative singular form, referring to a person suspected of deceit.
On wygląda na oszusta.
He looks like a fraud.
In this instance, 'oszustem' is in the instrumental singular form, used to define a state of being or profession.
Być oszustem to nie jest moralne.
To be a fraud is not moral.
Here, 'oszustem' is in the instrumental case singular form, emphasizing the role or identity of an individual.