If you couldn't, you wouldn't mind being slipshod (8)
I believe the answer is:
careless
'slipshod' is the definition.
(similar in meaning)
'if you couldn't you wouldn't mind' is the wordplay.
I cannot really see how this works, but
'mind' could be 'care' (I've seen this in another clue) and 'care' is present in the answer.
The remaining letters 'less' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'being' is the link.
Can you help me to learn more?
(Other definitions for careless that I've seen before include "Negligent - nonchalant" , "Not paying enough attention" , "Slipshod" , "Slapdash" , "Not careful or thorough enough" .)