Egg on new firm in multinational group with fancy gear (9)
I believe the answer is:
encourage
'egg on' is the definition.
(I've seen this before)
'firm in multinational group with fancy gear' is the wordplay.
'firm' becomes 'co' (a firm is a company).
'in' is an insertion indicator.
'multinational group' becomes 'enu' (I am not sure about this - if you are sure you should believe this answer much more).
'with' says to put letters next to each other.
'fancy' indicates anagramming the letters.
'gear' with letters rearranged gives 'rage'.
'enu'+'rage'='enurage'
'co' put inside 'enurage' is 'ENCOURAGE'.
'new' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for encourage that I've seen before include "Hearten, inspire" , "Egg on" , "Give support, confidence or hope to" , "Give hope or confidence to, help to advance" , "Spurs on" .)