Aim straight (6)
I believe the answer is:
direct
I believe this clue is a double definition.
'aim' is the first definition.
(synonyms)
'straight' is the second definition.
(I know that straight can be written as direct)
(Other definitions for direct that I've seen before include "Show where to go - straight" , "without ambiguity" , "'Straight, without deviation (6)'" , "Moving without changing direction or stopping" , "Frank; unambiguous" .)