We will accept love - something nasty rejects it - sad state of affairs? (10)
I believe the answer is:
woefulness
'something nasty rejects it sad state of affairs?' is the definition.
I can't tell whether this defines the answer.
'we will accept love' is the wordplay.
'will' becomes 'fulness' (I can't justify this - if you can you should believe this answer much more).
'accept' indicates putting letters inside.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'we'+'fulness'='wefulness'
'wefulness' placed around 'o' is 'WOEFULNESS'.
Can you help me to learn more?
(Another definition for woefulness that I've seen is " Deplorable".)