Run away joined up - it's allowed (5)
I believe the answer is:
legit
This clue could be a double definition.
'run away' is the first definition.
(as in 'leg it')
'it's allowed' is the second definition.
(I've seen this before)
'joined up' acts as a link.
This may not be correct. Some or all of it may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for legit that I've seen before include "Briefly in accordance with law or rules" , "Quite proper" , "ok!" , "allowed by law, shortly!" , "Conforming to the law" .)