and no mistake
A phrase used to emphasize the statement that precedes it. She's a lovely woman and no mistake.
and no mistake
without any doubt. informal 1993 Sam McAughtry Touch & Go He was a headcase and no mistake.
and ˈno mistake!
(old-fashioned, especially British English) used to show that you are sure about the truth of what you have just said: The dinner party was a disaster, and no mistake!