FORGETFUL

adj. amnesiac; absent-minded, distracted, abstracted, inattentive, preoccupied, neglectful, negligent, careless, lax, dreamy, dreaming, in dreamland, in the clouds, in cloud-cuckoo-land or cloud-land or Nephelococcygia, remote, distrait(e), Colloq not turned on, turned off, out of it Franklin is so forgetful he'd lose his head if it weren't stitched on