Deeply regrets going naked to cuddle inspirational figure for fun (9)
I believe the answer is:
amusement
'fun' is the definition.
(amusement is fun or enjoyment)
'deeply regrets going naked to cuddle inspirational figure' is the wordplay.
I cannot really see how this works, but
'inspirational figure' could be 'muse' and 'muse' is found within the answer.
The remaining letters 'ament' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'for' is the link.
Can you help me to learn more?
(Other definitions for amusement that I've seen before include "enjoyment for 19 > [(type of) PARK]" , "Light-hearted pastime" , "Pastime; recreation" , "Entertainment" , "Fun" .)