Go, devious varlet! (6)
I believe the answer is:
travel
'go' is the definition.
(I know that go can be written as travel)
'devious varlet' is the wordplay.
'devious' indicates anagramming the letters.
'varlet' anagrammed gives 'TRAVEL'.
(Other definitions for travel that I've seen before include "Move from one place to another" , "Tourism" , "Voyage" , "tour" , "It is said to broaden the mind" .)