Andrew goes out for a ramble (6)
I believe the answer is:
wander
'for a ramble' is the definition.
(I've seen this before)
'andrew goes out' is the wordplay.
'goes out' indicates anagramming the letters.
'andrew' with letters rearranged gives 'WANDER'.
(Other definitions for wander that I've seen before include "go wrong" , "Stray" , "Leisurely walk" , "Go to and fro" , "Stroll" .)