When could it be this uncouth? (5-4)
I believe the answer is:
rough-hewn
'this uncouth?' is the definition.
'when could it' is the wordplay.
I cannot really see how this works, but
an anagram of 'when' is 'hewn' which is present in the answer.
The remaining letters 'rough' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'be' acts as a link.
Can you help me to learn more?
(Another definition for rough-hewn that I've seen is " Crudely shaped".)