Decreases the clubs? (5)
I believe the answer is:
irons
This clue is a double definition.
'decreases' is the first definition.
(de-creases: removes creases by ironing clothes)
'the clubs?' is the second definition.
(iron is a kind of club)
(Other definitions for irons that I've seen before include "Prepares clothes" , "English player" , "Smooths the golfclubs?" , "Jeremy ---, Br. actor; golf clubs" , "things for an evening out" .)