Is ready and gives support (6,2)
I believe the answer is:
stands by
This clue is a double definition.
'is ready' is the first definition.
(I've seen this before)
'gives support' is the second definition.
(I've seen this before)
'and' acts as a link.
(Other definitions for stands by that I've seen before include "Is ready" , "Is supportive" , "fails to intervene" , "Holds oneself in readiness" , "Is available" .)