Partner who's gone to pot? Hardly (6,4)
I believe the answer is:
better half
'partner' is the definition.
(I've seen this before)
'gone to pot? hardly' is the wordplay.
I cannot quite understand how this works, but
'pot?' could be 'bet' (pot is a kind of bet) and 'bet' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'who's' acts as a link.
Can you help me to learn more?
(Other definitions for better half that I've seen before include "Wife (colloq.)" , "One's spouse" , "partner" , "Husband" , "Spouse (informal)" .)