The Collaborative International Dictionary of English v.0.48:
Absent-minded \Ab`sent-mind"ed\, a. Absent in mind; abstracted; preoccupied. -- Ab`sent-mind"ed*ness, n. -- Ab`sent-mind"ed*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
absentmindedly adv 1: in an absentminded or preoccupied manner; "he read the letter absently" [syn: absently, abstractedly, inattentively, absentmindedly]