Discredited woman's prayer before meal initially disregarded (9)
I believe the answer is:
disgraced
'discredited' is the definition.
(I know that discredited can be written as disgraced)
'woman's prayer before meal initially disregarded' is the wordplay.
'woman's' becomes 'di's' (Di is short for Diana).
'prayer before meal' becomes 'grace' (I've seen this before).
'initially' suggests taking the first letters.
The initial letter of 'disregarded' is 'd'.
'dis'+'grace'+'d'='DISGRACED'
(Other definitions for disgraced that I've seen before include "Shamed, dishonoured" , "In the doghouse?" , "Suffering shame" .)