Unqualified doctor bales out (8)
I believe the answer is:
absolute
'unqualified' is the definition.
(similar in meaning)
'doctor bales out' is the wordplay.
'doctor' indicates anagramming the letters.
'bales'+'out'='balesout'
'balesout' anagrammed gives 'ABSOLUTE'.
(Other definitions for absolute that I've seen before include "Total; not relative" , "Not qualified; total" , "Complete, full" , "decided" , "comprehensive?" .)