Collector of food in aid of increasingly old person (7)
I believe the answer is:
forager
'collector' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see a link between them that I don't see?
'food in aid of increasingly old person' is the wordplay.
I cannot really understand how this works, but
'food' could be 'forage' (forage is a kind of food) and 'forage' is present in the answer.
A single letter 'r' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for forager that I've seen before include "one gathering" , "plunderer" , "One searching for food" , "Collector of wild fungi, berries etc" .)