Pretty good commercial match (8)
I believe the answer is:
adequate
'pretty good' is the definition.
(thesaurus)
'commercial match' is the wordplay.
'commercial' becomes 'ad' (abbreviation for advertisement).
'match' becomes 'equate' (to equate is to match or be equivalent).
'ad'+'equate'='ADEQUATE'
(Other definitions for adequate that I've seen before include "Good enough, acceptable" , "up to the job?" , "Satisfactory, good enough" , "Enough to meet a purpose" , "Sufficient, good enough" .)