and no mistake!

and no mistake

A phrase used to emphasize the statement that precedes it. She's a lovely woman and no mistake. I intend to take this all the way to the Supreme Court if I have to, and no mistake! This was a carefully orchestrated crime and no mistake—amateurs couldn't pull off something like this.
See also: and, mistake, no
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

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!
See also: and, no
Farlex Partner Idioms Dictionary © Farlex 2017
See also: