Adverb

1. In return, as a reciprocal action; back.
   • 1485, Sir Thomas Malory, Le Morte Darthur, Book III:

     Merlyn warned the kynge couertly that gweneuer was not holsome for hym to take to wyf, for he warned hym that launcelot shold loue her and she hym ageyne

     Merlin warned the king covertly that Guinevere was not wholesome for him to take as his wife, for he warned him that Lancelot should love her and she him again

2. Back (to a former place or state).

   We need to bring the old customs to life again.

   The South will rise again.

3. Another time; once more.

   I didn't do a very good job the first time, and now I have to do it again.

   • 1979, Charles Edward Daniels et al., “The Devil Went Down to Georgia” (song), Million Mile Reflections, Charlie Daniels Band, Epic Records:

     Johnny said, “Devil, just come on back if you ever want to try again. ”

4. Over and above a factor of one.
   • 1908 December 10, Austin H. Clark, “New Genera and Species of Crinoids”, Proceedings of the Biological Society of Washington, Volume XXI, pages 229-230:

     Cirri l-lxxx, 15, about 12mm. long; first two joints short, about twice as broad as long; third about one-third again [=one and one-third times] as long as broad; fourth and fifth the longest, about half again [=one and a half times] as long as broad;

5. Great, thanks again!

   1. Tell me again, say again;

      What's that called, again?

   2. I ask again, I say again;

      Again, as I said before, I'm not criticizing, I just want to understand.

   3. Here too, here also, in this case as well;

      Approach B is better than approach A in many respects, but again, there are difficulties in implementing it.