Festive? Emphatically! (5)
I believe the answer is:
jolly
This might be a double definition.
'festive?' is the first definition.
(thesaurus)
'emphatically' is the second definition.
Both the answer and definition are adverbs. Perhaps they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for jolly that I've seen before include "Expression denoting hearty, sporting type of girl" , "Very pleasurable" , "' - - boating weather' (song)" , "Cheerful; very (informal)" , "Good-humoured, cheerful" .)