Butler worried about old affliction (7)
I believe the answer is:
trouble
'affliction' is the definition.
(I've seen this before)
'butler worried about old' is the wordplay.
'worried' indicates an anagram (worry can mean to interfere with or disturb).
'about' indicates putting letters inside.
'old' becomes 'o' (abbreviation).
'butler' is an anagram of 'truble'.
'truble' enclosing 'o' is 'TROUBLE'.
(Other definitions for trouble that I've seen before include "Hot water (if you are in it!)" , "Distress - concern - effort" , "'Care, distress (7)'" , "that follow witches' toil?" , "Hassle" .)