Marriage may see us now in obvious need initially (5)
I believe the answer is:
union
'marriage' is the definition.
(synonyms)
'us now in obvious need initially' is the wordplay.
'initially' indicates taking the first letters.
The initial letters of 'us now in obvious need' is 'UNION'.
'may see' acts as a link.
(Other definitions for union that I've seen before include "junction" , "Togetherness" , "political alliance" , "Agreement -- wedlock" , "match" .)