Refusal by daughter to give sign of agreement? (3)
I believe the answer is:
nod
'sign of agreement?' is the definition.
(a nod can indicate agreement)
'refusal by daughter' is the wordplay.
'refusal' becomes 'no'.
'by' says to put letters next to each other.
'daughter' becomes 'd' (genealogical abbreviation).
'no'+'d'='NOD'
'to give' is the link.
(Other definitions for nod that I've seen before include "OT land" , "Be agreeably" , "Cain was banished to the land of ..." , "Drop the head" , "Fellow that's set up number 500" .)