Definition of "yes" []

• It is so; as you say or ask. Used to express affirmation, agreement, positive confirmation, or consent. (adverb)
• An affirmative or consenting reply. (noun)
• An affirmative vote or voter. (noun)
• To give an affirmative reply to. (verb-transitive)
• Used to express great satisfaction, approval, or happiness. (interjection)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Hi Ray,,Eric and I were just discussing EBooks the other day and although the technology is very exciting, there is something about a book, especially one that smells,,yes, yes, Eric and I smell our books."
• ""_No_," if as to Taprobane in connexion with Ceylon we say both "_Yes_" and "_No_," -- not the less we come back with a reiterated "_Yes, yes, yes_," upon Ceylon as the crest and eagle's plume of the Indies, as the priceless pearl, the ruby without a flaw, and (once again we say it) as the Pandora of oriental islands."
• "Of course I said yes -- _yes_, it would be entirely proper and perfectly splendid, though they might have forgotten to put anything of the sort into books of etiquette."