Put up with the return of some indecent peccadillos (6)
I believe the answer is:
accept
'put up with' is the definition.
(accepting is a kind of putting up with)
'return of some indecent peccadillos' is the wordplay.
'return of' says the letters should be written in reverse.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'tpecca' is hidden in the letters of 'indecent peccadillos'.
'tpecca' reversed gives 'ACCEPT'.
'the' is the link.
(Other definitions for accept that I've seen before include "Reply in the affirmative" , "Take -- consent" , "one wouldn't say no to this" , "Take up, obtain" , "Take (something offered)" .)