Agreeable politicians begin renting (8)
I believe the answer is:
pleasing
'agreeable' is the definition.
('pleasing' can be similar in meaning to 'agreeable')
'politicians begin renting' is the wordplay.
'begin' indicates taking the first letters.
'renting' becomes 'leasing' (I've seen this before).
The first letter of 'politicians' is 'p'.
'p'+'leasing'='PLEASING'
(Other definitions for pleasing that I've seen before include "making one happy" , "Delightful" , "agreeable - with 13d" , "Gratifying" , "Satisfying or appealing" .)