inattentively
1. [ adverb ] in an absent-minded or preoccupied manner
Synonyms: absently absentmindedly abstractedly
Examples:

"he read the letter absently"

Related terms: absent absent absent inattentive absent inattentive
Similar spelling:   inattentive
  intensively
  inattentiveness
  inattention
  intentionally
  intentional
  in_attendance