answerer

vastaaja A person or thing that answers or responds.
1714, (w), The Publick Spirit of the Whigs, London: John Morphew, in Bertrand A. Goldgar and Ian Gadd (eds.), English Political Writings 1711-1714, The Cambridge Edition of the Works of Jonathan Swift, Cambridge University Press, 2008, p. 256,

It is a very unfair Thing in any Writer to employ his Ignorance and Malice together, because it gives his Answerer double Work (..)

Now list to my morning’s romanza, I tell the signs of the Answerer,

To the cities and farms I sing as they spread in the sunshine before me.

He prayed that Leo didn't think he was a fool. The other men in Leo’s life, anonymous partners, answerers of ads, old boyfriends, old Pete, massed impatiently behind him (..)