Scatty, forgetful (12)
This clue is a double definition.
'scatty' is the first definition.
(I've seen this before)
'forgetful' is the second definition.
(I've seen this before)
(Other definitions for absent-minded that I've seen before include "Liable to inattentiveness" , "Prone to forgetfulness" , "Vague and forgetful" , "Given to woolgathering" , "Forgetful, inattentive" .)
I believe this is a double definition.
'scatty' is the first definition.
(synonyms)
'forgetful' is the second definition.
(thesaurus)
(Another definition for absentminded that I've seen is " appear lost".)