Gossip just as wicked, initially (3)
I believe the answer is:
jaw
'gossip' is the definition.
(I know that gossip can be written as jaw)
'just as wicked initially' is the wordplay.
'initially' indicates taking the first letters.
The initial letters of 'just as wicked' is 'JAW'.
(Other definitions for jaw that I've seen before include "Facial bone" , "Talk; bone" , "Part of the head" , "It frames the mouth and holds the teeth" , "Chat" .)