Declines, with "out" (4)
I believe the answer is:
opts
'declines with out' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for opts that I've seen before include "Makes choice from post" , "Selects between alternatives" , "Chooses from a range of possibilities" , "Makes a choice from a range" , "Selects as an alternative" .)