Opposite words for yes :
" Well, I don't know- yes, I think I do. "Rose of Dutcher's Coolly", Hamlin Garland.
But if you don't mind-" " Yes, Mr. Malone?" "Out Like a Light", Gordon Randall Garrett.
Oh, yes, I 'member now! "The Marrow of Tradition", Charles W. Chesnutt.
Yes;- I have done that. "An Eye for an Eye", Anthony Trollope.