Accedes, acquiesces (7)
I believe the answer is:
assents
I believe this is a double definition.
'accedes' is the first definition.
('assent' can be a synonym of 'accede')
'acquiesces' is the second definition.
('assent' can be a synonym of 'acquiesce')
(Other definitions for assents that I've seen before include "Expresses agreement" , "Gives nod" , "Says yes" , "Agrees, complies" , "Accedes, acquiesces" .)