Contending (5)
'contending' is the definition.
('vie' can be a synonym of 'contend')
This is all the clue.
(Other definitions for vying that I've seen before include "Eagerly competing" , "Engaged in rivalry" , "Striving" , "in contention" , "in pursuit of victory" .)
(Other definitions for init that I've seen before include "You're in trouble when you're here" , "enjoying success" .)