4 adjectives to describe arguers

Then said Sajar-Ho: 'Thou wast ever a cunning arguer.

"I should like to know this hot-headed metaphysician," was the remark made to Buffon by President De Brosses, who happened to be then at Paris; and he afterwards added, "He is a nice fellow, very pleasant, very amiable, a great philosopher, a mighty arguer, but a maker of perpetual digressions.

For we see that there have been some men who have been ornate and dignified speakers, being at the same time shrewd and subtle arguers.

And it is from the fountain of the sophist that all this has flowed into the forum; but still, being despised by the subtle arguers, and rejected by dignified speakers, it has taken its place in the moderate kind of oratory of which I am speaking. XXVIII.

4 adjectives to describe  arguers