Go ahead and do creep about (7)
I believe the answer is:
proceed
'go ahead' is the definition.
(thesaurus)
'do creep about' is the wordplay.
'about' is an anagram indicator.
'do'+'creep'='docreep'
'docreep' anagrammed gives 'PROCEED'.
'and' is the link.
(Other definitions for proceed that I've seen before include "Follow a certain course" , "Move forward" , "Go forward" , "Continue; advance" , "Continue, carry on" .)