Acquiescing, submitting (8)
I believe the answer is:
acceding
This clue is a double definition.
'acquiescing' is the first definition.
('accede' can be a synonym of 'acquiesce')
'submitting' is the second definition.
('accede' can be a synonym of 'submit')
(Other definitions for acceding that I've seen before include "Admitting" , "Acquiescing, assenting" , "Assenting or yielding" , "Acquiescing, submitting" .)