I don't know man pursuing me about coming out (8)
I believe the answer is:
emergent
'coming out' is the definition.
(I've seen this before)
'i don't know man pursuing me about' is the wordplay.
'i don't know' becomes 'er'.
'man' becomes 'gent' (I've seen this before**).
'pursuing' says to put letters next to each other.
'about' is a reversal indicator.
'me' back-to-front is 'em'.
'er'+'gent'='ergent'
'ergent' after 'em' is 'EMERGENT'.
(Other definitions for emergent that I've seen before include "Coming into existence" , "In the process of coming into prominence" , "achieving prominence" , "coming into view" , "Breaking" .)