Evade rent collection. That's weak (9)
I believe the answer is:
enervated
'weak' is the definition.
(similar in meaning)
'evade rent collection' is the wordplay.
'collection' indicates an anagram (the same collection of letters).
'evade'+'rent'='evaderent'
'evaderent' is an anagram of 'ENERVATED'.
'that's' is the link.
(Other definitions for enervated that I've seen before include "Weakened, spiritless" , "Deprived of vigour" , "Debilitated" .)