innit
Concise Oxford English Dictionary © 2008 Oxford University Press:
innit/ˈɪnɪt/
▶contraction Brit. informal isn't it.
usage: In informal, usually spoken, language innit has developed into a general-purpose ‘filler’ which is used to seek confirmation or merely for emphasis, as in I play it quite often, innit? (meaning ‘don't I?’) and you'd better hurry on over, innit? (meaning ‘hadn't you?’).
'innit' also found in these Oxford entries:
