Complete getting better without unlimited jabs
I believe the answer is:
out-and-out
'complete' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for out-and-out that I've seen before include "Thorough and complete - emphatically not indoors" , "Utter and thorough - never in" , "Thorough, surpassing" , "In every respect" , "Definitely" .)