Sophist

Even a sophist who deceives without deceiving himself is not yet an impostor, as long as he confines himself to the authority of reason, even though he abuses it.

Tom is a sophist.

Tom's a sophist.

You're a sophist.

How would they say sophist in catalan?

[T]hey have acted in this Calumny both the injuſtice of the Tyrant, and the forgery of the Sophiſt.