Wildly greet men coming out (8)
I believe the answer is:
emergent
'coming out' is the definition.
(emergent can mean emerging or coming out)
'wildly greet men' is the wordplay.
'wildly' is an anagram indicator.
'greet'+'men'='greetmen'
'greetmen' with letters rearranged gives 'EMERGENT'.
(Other definitions for emergent that I've seen before include "In the process of coming into prominence" , "Newly independent" , "Rising" , "Breaking" , "Suddenly appearing" .)