Go away to get small stuff (5)
I believe the answer is:
scram
'go away' is the definition.
(scramming is a kind of going away)
'get small stuff' is the wordplay.
'get' says to put letters next to each other.
'small' becomes 's' (abbreviation - e.g. clothes size).
'stuff' becomes 'cram' (synonyms).
's' next to 'cram' is 'SCRAM'.
'to' acts as a link.
(Other definitions for scram that I've seen before include "Shoo!" , "Skedaddle!" , "Scarper" , "In slang, go away and beat it" , "Vamoose" .)