Quick: blame passport! (5)
I believe the answer is:
rapid
'quick' is the definition.
(synonyms)
'blame passport' is the wordplay.
'blame' becomes 'rap' (synonyms).
'passport' becomes 'id' (a passport is identification).
'rap'+'id'='RAPID'
(Other definitions for rapid that I've seen before include "Happening at great speed" , "Quick or swift" , "Speedy (5)" , "Precipitate" , "haste" .)