go to www.dictionary.com
True meaning of the word is " One who has abandoned one's religious faith, a political party, ones principles, or a cause." So, I suppose you and most of us here are apostates, but then most of us were already apostates when we entered the watchtower, because we had abondoned our original religion or political views. Also, the Watchtower are not the only ones to use that word to discribe poeple they don't like, do a search on google using IRAN and APOSTATE and see how many entires you get. The Watchtower has changed the true meaning of the word to make it sound like we have left God rather then just changed our minds over which is the true religion, if any. So tell your Elder friend to look the word up in the dictionary and not the Watchtowers.