Always giving a positive response (3)
I believe the answer is:
aye
This clue is a double definition.
'always' is the first definition.
(archaic term for 'always')
'a positive response' is the second definition.
(dialect term for 'yes')
'giving' is the link.
(Other definitions for aye that I've seen before include "Yes vote" , "Yes; ever" , "Yes, at the double for the sailor" , "An affirmative vote" , "Yes (archaic)" .)