One doesn't go in for such entertainments (7)
I believe the answer is:
outdoor
'one' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'doesn't go in for such entertainments' is the wordplay.
I cannot really see how this works, but
'go' could be 'do' (doing is a kind of going) and 'do' is present in the answer.
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is found within the leftover letters.
The remaining letters 'our' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for outdoor that I've seen before include "Open-air" , "healthy pursuits" , "Taking place in the open air" , "This sport is not under a roof" , "Used in the open air" .)