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