Source : Webster's Revised Unabridged Dictionary (1913)

Absently \Ab"sent*ly\, adv.
   In an absent or abstracted manner.

Source : WordNet®

absently
     adv : in an absent-minded or preoccupied manner; "he read the
           letter absently" [syn: {abstractedly}, {inattentively},
            {absentmindedly}]