A man going round the street lost? (6)
I believe the answer is:
astray
'lost?' is the definition.
(thesaurus)
'a man going round the street' is the wordplay.
'man' becomes 'ray' (**).
'going round' indicates putting letters inside.
'the street' becomes 'st'.
'a'+'ray'='aray'
'aray' going around 'st' is 'ASTRAY'.
(Other definitions for astray that I've seen before include "Off the correct path" , "Gone off the right path" , "Off-course" , "Off one's route or lost" , "A satyr (anag.)" .)