Source : Webster's Revised Unabridged Dictionary (1913)

Humanly \Hu"man*ly\, adv.
   1. In a human manner; after the manner of men; according to
      the knowledge or wisdom of men; as, the present prospects,
      humanly speaking, promise a happy issue. --Sir W. Raleigh.

   2. Kindly; humanely. [Obs.] --Pope.

Source : WordNet®

humanly
     adv : in the manner of human beings; "humanly possible"