[Creep lazes about, say, around bar endlessly] (9)
I believe the answer is:
sleazebag
'creep' is the definition.
'lazes about say around bar endlessly' is the wordplay.
'about' is an anagram indicator.
'say' becomes 'eg' (**).
'around' is an insertion indicator.
'endlessly' means to remove the last letter.
'bar' with its final letter taken off is 'ba'.
'eg' enclosing 'ba' is 'ebag'.
'lazes' is an anagram of 'sleaz'.
'sleaz'+'ebag'='SLEAZEBAG'
(Other definitions for sleazebag that I've seen before include "Lowlife" , "Unprincipled man (slang)" , "Despicable person" , "Contemptible type" , "Dirty dog" .)