Getting old for appearing in public in (7,3)
I believe the answer is:
wearing out
'getting old' is the definition.
The answer and definition can be both related to bodily activities as well as being present participle verbs.
Maybe you can see a link between them that I can't see?
'appearing in public in' is the wordplay.
I cannot quite see how this works, but
'in' could be 'wearing' (being in certain clothes) and 'wearing' is found within the answer.
'public' could be 'out' (out can mean released to the public) and 'out' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Another definition for wearing out that I've seen is " Exhausting".)