Accomplished daughter, single (4)
I believe the answer is:
done
'accomplished' is the definition.
(I've seen this before)
'daughter single' is the wordplay.
'daughter' becomes 'd'.
'single' becomes 'one' (I've seen this before**).
'd'+'one'='DONE'
(Other definitions for done that I've seen before include "Tricked" , "Completed" , "Finished like node" , "This settled" , "Finished or ended" .)