Able rise? That's wrong for one who lets himself down (8)
I believe the answer is:
abseiler
'one who lets himself down' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'able rise? that's wrong' is the wordplay.
'that's wrong' is an anagram indicator.
'able'+'rise'='ablerise'
'ablerise' anagrammed gives 'ABSEILER'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for abseiler that I've seen before include "taking rope down" , "who has an on-line comedown" , "one on the way down" , "A type of climber" , "Downward climber" .)