Husband supports tidy Welsh club (5)
I believe the answer is:
neath
'welsh club' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'husband supports tidy' is the wordplay.
'husband' becomes 'h' (abbreviation).
'supports' is a charade indicator (letters next to each other) (bottom letters provide a support for the top ones).
'tidy' becomes 'neat' (synonyms).
'h' put after 'neat' is 'NEATH'.
Can you help me to learn more?
(Other definitions for neath that I've seen before include "Under, poetically" , "not on top" , "town in South Wales" , "Welsh rugby club" , "River" .)