Rash, loud comedian entertaining retired ladies (9)
I believe the answer is:
foolhardy
'rash' is the definition.
(I know that rash can be written as foolhardy)
'loud comedian entertaining retired ladies' is the wordplay.
'loud' becomes 'f' (short for forte - 'loud' in music).
'comedian' becomes 'hardy' (I can't justify this - if you can you should give a lot more credence to this answer).
'entertaining' means one lot of letters goes inside another (inviting in, as for dinner).
'retired' is a reversal indicator.
'ladies' becomes 'loo' ('the ladies' is a type of loo or toilet).
'loo' in reverse letter order is 'ool'.
'f'+'hardy'='fhardy'
'fhardy' enclosing 'ool' is 'FOOLHARDY'.
Can you help me to learn more?
(Other definitions for foolhardy that I've seen before include "daredevil" , "Reckless" , "Hot-headed" , "Dry loofah for quality of rashness" , "Impulsive" .)