Source(s): That's Life! You should give the points to larry or cink - but I'm just going to expand on it for a clearer picture. Of course, to bar means to block or not let in. Saying bar-none, it means that we are not barring any possibilities from being a factor in describing anything. Bar(ing)-no(thing) Bar-none, this is the best sandwich I've ever eaten -- I am saying that out of any good sandwich I have ever eaten in my whole life, with no exceptions, it is the best sandwich ever.