Divulge answer during party (6)
I believe the answer is:
reveal
'divulge' is the definition.
(I know that divulge can be written as reveal)
'answer during party' is the wordplay.
'answer' becomes 'a' (abbreviation eg in Q and A).
'during' is an insertion indicator.
'party' becomes 'revel' (I've seen this in another clue).
'a' placed inside 'revel' is 'REVEAL'.
(Other definitions for reveal that I've seen before include "Tell the truth" , "Uncover or expose" , "Expose or display" , "Disclose, make apparent" , "Remove cover to display" .)