disputer?

THEAETETUS: We were.

STRANGER: And does he not also teach others the art of disputation?

THEAETETUS: Certainly he does.

STRANGER: And about what does he profess that he teaches men to dispute?
To begin at the beginning--Does he make them able to dispute about divine
things, which are invisible to men in general?

THEAETETUS: At any rate, he is said to do so.

STRANGER: And what do you say of the visible things in heaven and earth,
and the like?

THEAETETUS: Certainly he disputes, and teaches to dispute about them.

STRANGER: Then, again, in private conversation, when any universal
assertion is made about generation and essence, we know that such persons
are tremendous argufiers, and are able to impart their own skill to others.

THEAETETUS: Undoubtedly.

STRANGER: And do they not profess to make men able to dispute about law
and about politics in general?

THEAETETUS: Why, no one would have anything to say to them, if they did
not make these professions.