Wife's talking, somewhat merry (6)
I believe the answer is:
festal
'merry' is the definition.
(I know that merry can be written as festal)
'wife's talking somewhat' is the wordplay.
'somewhat' indicates the answer is hidden within the clue.
'FESTAL' is hidden in the letters of 'wifes talking'.
(Other definitions for festal that I've seen before include "Relating to a festival; joyous" , "Jovial" , "Relating to a holiday" , "Joyous, festive" , "Jovially celebratory" .)