Promise drama and witty repartee (8)
I believe the answer is:
wordplay
'witty repartee' is the definition.
'wordplay' can be an answer for 'repartee' (thesaurus). I am unsure of the 'witty' bit.
'promise drama' is the wordplay.
'promise' becomes 'word' (as in 'I give you my word').
'drama' becomes 'play' (synonyms).
'word'+'play'='WORDPLAY'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for wordplay that I've seen before include "Punning" , "Wit" , "verbal shenanigans" , "pun?" , "Making puns" .)