Loud confusing pastime (4)
I believe the answer is:
ludo
'pastime' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'loud confusing' is the wordplay.
'confusing' is an anagram indicator.
'loud' with letters rearranged gives 'LUDO'.
Can you help me to learn more?
(Other definitions for ludo that I've seen before include "race for four tokens" , "Children's board game" , "Type of board game" , "Race game" , "Simple board game, involving dice" .)