Delay support (4,2)
I believe the answer is:
hold up
This clue is a double definition.
'delay' is the first definition.
(I know that delay can be written as hold up)
'support' is the second definition.
(I know that support can be written as hold up)
(Other definitions for hold up that I've seen before include "Exhibit" , "Survive" , "Stop and rob" , "jam" , "Hitch" .)